Clinical evidence began to ______ suggesting that the new drugs had a wider range of useful effect than had been predicted from experiments in animals.
The Chinese lunar New Year usually _____ two records: the world's most watched television gala show, and its busiest telecommunications network.
Nowadays certain limit should be set on use of cars to reduce air pollution.
---What’s your favorite sport? ----Skiing.__________.
We were cut off from the outside world by the sudden flood; what’s worse, our food _______.
______ well prepared you are, you still need a lot of luck in mountain climbing.