The street are all wet.It ___ during the night.
| A．must be raining | B．must havge been rain | C．had to rain | D．must have rained |
When the manager goes out for vacation, he always leaves his secretary_______ the factory.
| A．in the charge of | B．in charge of | C．in charge | D．in the charge |
It is difficult to judge whether what he said_________.
| A．is worth to be praised | B．is worthy being praising |
| C．is worthy of being praised | D．is worth being praised |
Bill wasn’t happy about the delay of the report by Jason, and ________.
| A．I was neither | B．neither was I | C．I was either | D．either was I |
Gun control is the subject ________ Americans have argued for a long time.
| A．which | B．with which | C．about which | D．of which |
Only when I left my parents for Italy, ________how much I loved them.
| A．I realized | B．I had realized | C．had I realized | D．did I realize |