Jane was elected chairman of the committee. This is the first time that a woman ______ to the post.[ ]

Science and technology __________ nowadays in our socialist construction.

Nowadays people are wasting too much energy, so we should lead a low-carbon life., we’ll suffer a lot in the future.

“.Thomas didn’t come to school for the meeting, did he?…No. He . The meeting had been cancelled.

The leaders from six countries are discussing whether it is necessary to ____a special committee todeal with the worldwide terror attack. [ ]