By now, more than 100 photos ________ back to the earth by Chang’e-3.
| A．had been sent | B．has been sent | C．have been sent | D．will be sent |
I’d like to study law at university___my cousin prefers geography.
| A．though | B．as |
| C．while | D．for |
It is reported that two schools,____are being built in my hometown,will open next year.
| A．they both | B．which both |
| C．both of them | D．both of which |
Peter received a letter just now___his grandma would come to see him soon.
| A．said | B．says |
| C．saying | D．to say |
.Some students often listen to music___classes to refresh themselves.
| A．between | B．among |
| C．over | D．during |
—What does the sign over there read？
—“No person___smoke or carry a lighted cigarette,cigar or pipe in this area.”
| A．will | B．may |
| C．shall | D．must |