On a pair of I have a question in my exercise ( )-Mom,I‘d ;ike to buy a pair of shoes. - OK.But ______ before buying. A.try it on B.try them on C.try on them I used to choose a, but the answer is B. a pair of is not singular? Why use them when referring?

On a pair of I have a question in my exercise ( )-Mom,I‘d ;ike to buy a pair of shoes. - OK.But ______ before buying. A.try it on B.try them on C.try on them I used to choose a, but the answer is B. a pair of is not singular? Why use them when referring?

Mom means to buy shoes. Your central word here has become shoes, so you need to use them
But some people say that a pair of sth. is singular, and it should be used when referring to it?
How to use a pair of shoes?
two pairs of shoes
A pair of two shoes
two pairs of shoes
TWO PAIRS OF SHOES
Get out of hand
RT
be out of control
beyond control
Can you help me make some phrases?
Can you make some phrases?
Out of control
Run out of
Get out of SWH
Out of style
Be out of fashion
10 kinds
Outside of
From the inside
because
Lack, give up
lose
Beyond the scope of
Made of
come from
Out of place with
Leave, leave
The corresponding point of a number on the number axis moves 5 units of length to the left to get the corresponding point of its opposite number, then the number is ()?
A. - 2 B.2 C. - 2 and half D
Is there a mistake? Explain the reason when you answer
Such a simple question
X-5=-X
So x = 2.5, choose D
D!
That is to say, which of the four answers minus 5 is its opposite number!
D. 5 / 2 = 2.5, that is, 5 / 2
She would like a cup of tea
Would she like a cup of tea?
would she like a cup of tea?
Would she like a cup of tea?
The monotone decreasing interval of function f (x) = x + | 1-3x | is
When x is less than 1 / 3, it decreases monotonically
The monotonicity of function f (x) = x + 1 x on (0,1) is judged and proved
It's a decreasing function (2 points) proof: let 0 ＜ x1 ＜ x2 ＜ 1 (4 points) then f (x1) − f (x2) = (x1 − x2) + (1x1 − 1x2) = (x1 − x2) (x1x2 − 1) x1x2 (9 points) ∵ 0 ＜ x1 ＜ x2 ＜ 1, ∵ x1x2-1 ＜ 0, x1-x2 ＜ 0 (12) f (x1) > F (x2).. f (x) in (0
When a number moves 8 units of length on the corresponding point of the number axis, the corresponding point of its opposite number is obtained. This number is___
Let this number be X
Then x + 8 = - X
X = - 8 or X
The solution is x = - 4 or 4
4 or - 4
8 or - 8
Four
Translate the English phrase ahead of schedule
advance
Before the rules
Ahead of schedule
preface
Front gear
Plan ahead.
Header
Put in the sentence according to the context to translate is the most accurate. It means "ahead of schedule"
save against a rainy day