Don't speak English in the library

Don't speak English in the library

Be quiet in the labarary.
Or don't talk in the laboratory

I'm sorry, I left my English book at home
Please turn off the light, I can see the words on the blackboard clearly

1wound you mind taking up your book on the table .2excuse me ,can you tell me the way to the libraly .3l'am sorry i have left the english book at home .4please turn off the light ,i can see the blackboard clearly .

English translation
I found this book in the school library ____ ____ ____ .(by chance)
It's hard to do with three vacancies

just by chance

Who took my book? It was on the desk just now

Who took my book? It was on the desk just now
Who has taken my book?It was just on the desk
It's better to use the perfect tense in the first sentence and the past tense in the second sentence

The value of (2 M2 + am-y + 6) - (2B M2 - 3M + 5y-1) has nothing to do with the value of M. find the value of 1 / 3A ^ 3-2b ^ 2 - (1 / 4A ^ 3-3b ^ 2)

A 180 meter long train runs in the same direction with car a at the speed of 60 km / h. The train runs from overtaking car a to meeting car B in 5 minutes. If the train takes 30 seconds to overtake car a and 6 seconds to leave with car B, how many minutes will car B meet car a?

60 km / h = 16.67 M / s, 5 min = 300 s

In monomials_______ It's called it____ ,_____________ The sum of exponents is called its number

In monomials__ Constant_____ It's called it__ Coefficient__ ,___ Of the same letter__________ The sum of exponents is called its number

A barrel of oil costs 1 / 8 kg per day. How many kg per 7 days? If it costs 1 / 8 per day, how much per 7 days? What's the difference between the two questions?

One has a unit, the other has no unit
Make people know

In the acute angle △ ABC, if ∠ a = 60 ° and the vertical bisectors on both sides of AB and AC intersect at point O, then the degree of ∠ BOC is__________
In the acute angle △ ABC, if ∠ a = 60 ° and the vertical bisectors on both sides of AB and AC intersect at point O, then the degree of ∠ BOC is__________
There has to be a process

120

For a rectangular piece of paper with an area of 1 square meter, cut half of it in the first time and the remaining half in the second time. If you cut it in this way, what is the remaining area in the sixth time?

The remaining area of the sixth time is
1*（1/2）*（1/2）*（1/2）*（1/2）*（1/2）*（1/2）
=The sixth power of 1 * (1 / 2)
=1*（1/64）
=1 / 64 M2