____ in a sandstorm was a terrible experience. Nowhere _____ but to stay at home.
| A．To be caught; we could go | B．To have been caught; could we go |
| C．Having caught; we could go | D．Caught; could we go |
24．The first time I met David in the Central Park, both of us felt that we_____each other for ages.
| A．knew | B．have known | C．had known | D．Know |
23．---How much do I owe you for this beautiful vase?
---_____.It’s a gift.
| A．You’re welcome | B．That’s right | C．With pleasure | D．Forget it |
22．Despite the fact that Betty is a lovely girl, she____be extremely difficult to work with sometimes.
| A．must | B．should | C．would | D．Can |
21．Have you heard_____report? People with______good knowledge of engineering are in great need in the job market.
| A．a; a | B．the; a | C．a; / | D．the;/ |
33. Generally speaking, ______ according to the directions, the drug has no side effect.
| A．when taking | B．when taken | C．when to take | D．when to be taken |