It was in the lab______ was taken charge of by Professor Zhang ____ they did the experiment.
A.where, that | B.which, where | C.that, where | D.which, that |
Chang’e Satellite is named after a famous Chinese fairy , who is said ______to the moon.
A.having flown | B.to have flown | C.to be flying | D.flying |
The article suggests that when a person _______ under unusual stress he should be especially careful to have a well-balanced diet.
A.is | B.were | C.be | D.was |
A group of young Americans have come to Beijing for a visit. Half of them, ___is, 50 persons, can speak Chinese fluently.
A.that | B.which | C.who | D.it |
Without proper lessons, you could _______ a lot of bad habits when playing the piano.
A.keep up | B.pick up | C.draw up | D.catch up |
My stomach ______ me. I thought it was going away, but now it’s getting worse and worse.
A.was killing | B.is killing | C.kills | D.killed |