----- As we know, you won’t go back to the USA since you have established a research center here．But how long _____ in America?
----- For almost 10 years．
| A．did you study | B．have you studied |
| C．were you studying | D．have you been studying |
The actor pretends to be a fierce, bold man, but _____ he is timid and shy.
| A．in action | B．in addition | C．in reality | D．in short |
_____ makes that teacher famous is _____ over 92% of his students have been admitted to the state universities.
| A．What; because | B．That; because | C．That; what | D．What; that |
----You mustn’t play football on the street. It’s dangerous.
----No, _____. Thank you.
| A．it’s safe | B．we won’t | C．it’s none of your business | D．we must |
Now the question that you must carefully consider is _____ can be put into practice.
| A．how what you have learned | B．how you have learned |
| C．that why you have learned | D．how that you have learned |
The order is that all the goods _____ to the city on time.
| A．ship | B．shipped | C．be shipped | D．are shipped |