单选题The Internet is a most useful means of communication, _____ has become popular in recent years.
单选题A large fish was slowly swimming through the water, its tail _____ back and forth like the pendulum of a clock.
单选题I guess Professor Wang hasn’t finished grading the papers yet. If he had, he would not keep us in _____.
单选题He didn’t dare to do it, _____?
单选题The editorial _____ now will appear in tomorrow’s newspaper.
单选题Henry stood by me when I most needed him. I’ll always _____ that.
单选题Please show me the table _____.
单选题Today housework has been made much easier by electrical _____.
单选题We did have a meeting yesterday, but you _____, so we did not inform you.
单选题We are all _____ to dislike those who are critical of us.
单选题There are many who believe that the use of force _____ political ends can never be justified.
单选题It’s one thing to communicate with your friends on the phone, but it is quite another to _____ a nice letter explaining the same ideas.
单选题Under no circumstances _____ his motherland.
单选题If you wish to save more money, you must try to be more _____.
单选题I don’t doubt _____ he will sooner or later succeed.
单选题I didn’t call the hotel to make a room reservation, but I _____.
单选题I am determined that my son _____ have a better start than I did.
单选题This pretty girl seems to have plenty of confidence, but appearances are sometimes _____.
单选题My grandma’s condition looks very serious and it is doubtful if she will _____.
单选题I decided to go to the library as soon as I _____.