—Listen! There is a knock on the door．Who _____ it be?
—It must be Jack．Just now I sent for him．
| A．shall | B．can | C．must | D．might |
On Feb. 6, Xi’an – Zhenzhou High – Speed Railway,_________first high – speed railway in_______West China, was put into operation.
| A．不填；the | B．the; the | C．the; 不填 | D．不填；不填 |
______ you are alone at home, why don’t you go with us to the party?
| A．Even though | B．As though | C．So that | D．Now that |
Can you ___me to call Mr. Smith this afternoon? You know how forgetful I am.
| A．permit | B．persuade | C．remind | D．allow |
It was quite ___accident that I met him; he was homeless and ___rags at that time.
| A．by; in | B．on; in | C．at; by | D．in; in |
You should pay a lot of attention to children’s ideas; sometimes they ___be really creative.
| A．must | B．can | C．need | D．should |