Have you finished the report?—Oh, sorry. It was so noisy in the office that I couldn’t _______ down to write anything.

Generally speaking , ______according to the directions , the drug has no side effect .

The new survey shows that the number of students ______ computer games has been on theincrease in recent years.[ ]

________Chinese culture with overseas cultures is a challenging job, but you will learn a lot from it

has Jack been studying English—Since he was seven years old.