--Haven't you seen Mr. Wilson at the lecture?
--Yes, but he had left _________ I could ask him any questions.
| A．when | B．before | C．after | D．as |
In autumn it will______cool.
| A．turn | B．get | C．look | D．take |
My mother goes shopping,______I must look after my little brother.
| A．so | B．because | C．and | D．but |
He will leave school______two days.
| A．with | B．after | C．in | D．on |
Everyone______that computer is helpful.
| A．knows | B．know | C．think | D．will knows |
There_______a talk show on CCTV-3 at eight this evening.
A. is going be B is going to have C. will have D will be