No freshman and no graduate _______ to sit in on the forum.

A. are allowed        B. is allowed           C. are agreed      D. is agreed

 On each side of the street _______a lot of trees.

A. stands             B. stand                C. is standing     D. are grown

 Professor Smith,  along with his assistants,            on the project day and night to meet the deadline.

A. work               B. working              C. is working      D. are working

 About one third of the population in Beijing and Shanghai_________ netizens, but in poorer areas, only three or four percent _________online.

A. is; is             B. are; are             C. are; is         D. is; are

 The theory he's stuck _____________ us that earthquake can be forecast.

A. to proves          B. to prove             C. to proving      D. to proved

 ___ with the size of the whole earth, the biggest ocean does not seem big at all.

A. Compare           B. When comparing       C. Comparing       D. When compared

 ____computer games made his mother worried much.

A. Addicted to playing           B. Being addicted to playing

C. Being addicted to play        D. Addicted to play

 You could see the runners very well from _________ we stood.

A. which             B. where                C. that            D. when

 Then the great day came ____ he was to march past the palace in the parade.

A. where             B. since                C. when            D. till

 __________, she could hardly have any time to play with her little daughter.

A. Busy as she was               B. As was she busy

C. She was as busy               D. As she was busy