What _____ to Joan last night? What did she cry for?
| A．was happened | B．happened |
| C．was happening | D．had happened |
. ——Who are you going to havethis letter for you?
—— My secretary.
| A．type | B．typed | C．been typed | D．been typing |
--If youto the party last Saturday, you would have met our old friend Jim .
--I caught a cold, for I had been walking around in the rain.
| A．came | B．had come | C．would come | D．would have come |
The government announced that six highways by the end of last year.
| A．built | B．had built | C．have been built | D．had been built |
. As a result of destroying the forests, a large ___ _ of desert
___ covered the land.
| A．number; has | B．quantity; has | C．number; have | D．quantity; have |
Is this science lab ___ some foreign experts visited last Friday?
| A．that | B．where | C．which | D．the one |