A lesson from the terrible drought(干旱) that hit some parts of southwestern China this year is that more anti-drought projects ______ built in the past years.
| A．should be | B．should not have been |
| C．ought to have been | D．must be |
—Have you ____ been to our town before?
—No, it’s the first time I ___ here.
| A．even, come | B．even, have come |
| C．ever, come | D．ever, have come |
—Do you know our town at all?
—No, this is the first time I __________ here.
| A．was | B．have been |
| C．came | D．am coming |
He attended the party without _______________.
| A．invited | B．inviting | C．having invited | D．being invited |
The library needs ＿＿, but it will have to wait until Sunday．
| A．cleaning | B．to clean | C．clean | D．being cleaned |
Having passed all the tests, she felt a great weight _____ off her mind.
| A．taking | B．taken | C．take | D．to be taken |