Li Ning was able to set up a school for gymnasts in 1991, ______ he has continued to help young people to achieve their sporting ambitions.
A. when B. dring which C. since then D. since when
Now 70 years old, the British physicist, Pendry can’t remember a time when he was not asking a question as a kid, joking that he ________ his parents to death.
A. should torment(折磨) B. must torment
C. must have tormented D. should have tormented
It was not until this year _____ scientists managed to make a cat and a goldfish disappear from sight using an invisibility cloak(斗篷)
A .that B. when C. while D. As
The comedy actor, _____ only 55 kilos but ____ in a heavy oversized coat , looked funny enough to make all the audience laugh.
A. weighed; dressed B. weighed; dressing
C. weighing; dressed D. weighing; dressing
______ bright a talker you are, there are time when it’s better to remain silent.
A. Whatever B. However C. Whenever D. Whoever
—Have your read the article A Dirty Beijing, which is about air pollution?
—Yes. It’s highly informative. I _____no idea that the PM2.5 there sometimes reached 300.
A. have B. had C. will have D. would have
