-These farmers have been to the United States.
-Really? When _______ there?
| A．will they go | B．did they go |
| C．have they been | D．have they gone |
American First Lady Michelle Obama arrived ______ China _______the afternoon of March 20, 2014.
| A．on, on | B．in, in | C．in, on | D．at, in |
.---- The presidents of China and the USA had ___interview a short time ago.
---- And it was __great success.
| A．an; / | B．the; a | C．an; a | D．the; / |
— How much does it cost to built the school library?
— Fouryuan.
| A．million of | B．millions of | C．million | D．Millions |
— Why hasn’t Mr. Li come to work yet?
—Because he _______Guangzhou for a holiday.
| A．goes to | B．has gone to | C．was going to | D．will go to |
— I’m a little tired. Let’s go to the zoo by taxi.
—We ________take a taxi. It’s not far from here.
| A．needn’t | B．couldn’t | C．mustn’t | D．can’t |