Most of the students enjoy_____ stamps.
| A．collect | B．to collect | C．collecting | D．collected |
The mother didn’t know _____to blame for the broken glass as it happened while she was out.
| A．who | B．which | C．they | D．that |
Behind the coach _____our team wearing blue suits．
| A．have | B．walk | C．is followed | D．appears |
The poor little boy who _____caught stealing a cake over there is an orphan．
| A．has | B．had | C．got | D．is |
-----Did Mary come to the party?
---I don’t know．She _____while I was out．
| A．may have come | B．must have come |
| C．might come | D．could come |
The old man leads ______happy life now, but he will never forget ______hard time when he was poor.
| A．the, a | B．/; the | C．the; / | D．a, the |