单选题 It's time we ____ the lecture because everybody has arrived.

单选题 Therefore,other things______equal, the number of workers that employers want decreases.

单选题 This kind of material expands______the temperature increasing.

单选题 Two days is not enough for him to finish the work. He need ________day.

单选题 Never before _______ see such a terrible car accident on the road!

单选题 It is said that she will go abroad_____this month.

单选题 The girl is_____of a film star.

单选题 The red flower goes from one to _______ in the class.