With sufficient scientific information a manned trip to Mars should be _____.
| A．obtainable | B．potential | C．considerable | D．feasible |
—______ you pass the examination on the first attempt?
—Of course. You know, I have been preparing for it for a long time.
| A．Can | B．May | C．Shall | D．Could |
When hearing the good news, both the child and the mother ______ very happy.
| A．wasn’t | B．were | C．is | D．aren’t |
The teacher said “______ you work hard and have a good way, all of you will succeed.”
| A．If | B．Although | C．Though | D．Before |
______ he did was quite right.
| A．That | B．Which | C．What | D．Who |
His younger sister is often made to cry by him, but this time she made him ______.
| A．crying | B．cry | C．to cry | D．cries |