________ in the queue for half an hour, the old man suddenly realized he had left the cheque in the car.
he naughty boys would play ______trick on ______ neighbours who didn’t give them any sweets on Halloween.
I really didn’t understand____ made my son so sad this morning.
You’d better not phone me tomorrow evening; I ____ an important meeting then.
Another bridge _____ at the end of 2012 over LiuYang River will benefit many people.
Tom, it’s good for you to search the Internet for some information ____ Shanghai before your trip there. A. in B. for C. of D on