Only when I was told the news ___ that he himself was the great hero.
| A．I knew | B．I did know | C．did I know | D．did I knew |
The scientist did ＿＿ experiments to test the new drug.
| A．a series of | B．a good many of | C．a great many | D．a lots of |
These plants are watered ＿＿ .
| A．every a few days | B．every third day |
| C．every others day | D．each two days |
Guilin is ＿＿ worth ＿＿. Have you been to it?
| A．well; visiting | B．well; to visit | C．very; a visit | D．very; a visit |
The result of the experiment was very good, ___________ we hadn’t expected.
| A．as | B．that | C．which | D．what |
My family consider ＿＿ a computer, which is considered ＿＿ a great help in our work.
| A．buying; to be | B．buying; being | C．to buy; being | D．to buy; to be |