-- Mr. White, will you please teach me how to perform pair skating today?
-- . You have to practise single skating well first.
| A.Two heads are better than one. | B.Think twice before you do. |
| C.Learn to walk before you run. | D.One today is worth two tomorrows. |
.The United States signed up Friday for the 2010 Shanghai World Expo,_______it the last major country to join the event.
| A.making | B.made | C.to make | D.having made |
.In this experiment, they are wakened several times during the night and asked to report what they__________.
| A.had just been dreaming | B.had just dreaming |
| C.are just dreaming | D.have just been dreaming |
--I hear Michael is in hospital.
----Oh, really? I____know. I______go and visit him.
| A.didn’t; am going to | B.don’t;would | C.don’t;will | D.didn’t; will |
Children find_____difficult to sit for hours with little to do while flying.
| A.which | B.this | C.that | D.it |
---Must I see a doctor right now?
----No, you______see a doctor for the time being.
| A.can’t | B.shouldn’t | C.needn’t | D.mustn’t |