Rather than ________ on a crowded bus, he always prefers ________ a bicycle．

A．ride; ride

B．riding; ride

C．ride; to ride

D．to ride; riding

I can’t stand ________ with Jane in the same office．She just refuses ________ talking while she works．

A．working; stopping

B．to work; stopping

C．working; to stop

D．to work; to stop

－The cars give off a great deal of waste gas in the streets．

－Yes．But I’m sure something will be done to ________ air pollution．

A．reduce

B．remove

C．collect

D．warn

The train was ________ to arrive at 11∶30, but it was an hour late．

A．about

B．likely

C．certain

D．supposed

If you go to Xi’an, you’ll find the palaces more magnificent than commonly ________．

A．supposing

B．supposed

C．to suppose

D．suppose

－I saw Dave in the lift this morning．

－Really?He ________ around here for a long time．

A．won't be seen

B．wasn't seen

C．hasn't been seen

D．hadn't been seen

It was 2 hours' wait by the time the announcement ________, saying my flight was canceled．

A．had been made

B．was made

C．made

D．was making

The World Wide Web is sometimes jokingly called the World Wide Wait because it ________ be very slow．

A．should

B．must

C．will

D．can

－Lucy doesn't mind lending you her dictionary．

－She ________．I've already borrowed one．

A．can't

B．mustn't

C．needn't

D．shouldn't

Tom, you ________ leave all your clothes on the floor like this!

A．wouldn't

B．mustn't

C．needn't

D．may not