The two iPads are both in fashion and of good quality, but of them are not on sale. So you’d better make your decision as soon as possible.
A survey was carried out on the death rate of those who were infected by SARS, ________were surprising.
In recent years much more emphasis has been put______ developing the students productive skills.
_____ of water makes Death Valley a desert, but it is by no means devoid.
There are some police cars in front. What do you suppose _____?
Tina _____ have known the truth, or she would have told us.