—Is it that Jack often plays computer games makes his parents worry about him ?
—Yes , I think so .
| A．what | B．when | C．that | D．which |
The old couple has two children, __________ able to come to see them when they feel lonely, however.
| A．both of them are | B．neither of them are |
| C．none of whom are | D．neither of whom |
I found I could easily make myself _________ by using sign language.
| A．understood | B．understand | C．to understand | D．being understood |
Shall I tell him the change of the schedule right now?
---- I am afraid you ________, in case he comes late for the meeting.
| A．will | B．must | C．may | D．can |
We came to a house ________stood a tall tree
| A．which before | B．in front of which | C．on which | D．in which |
I still remember the days_______ we lived together.
| A．in which | B．which | C．in that | D．that |