My friend, Tom, left New York in 1976 and _____ since then.
| A．hadn't been heard of |
| B．hasn’t been heard of |
| C．hasn't heard of |
| D．hadn't heard of |
Developing a low-carbon economy is__________global topic and the world needs
__________clean revolution with participation from everyone, decision makers to the children.
| A．a；the | B．a；a | C．the；a | D．／：the |
It is generally considered unwise to give a child_____________he or she wants.
| A．however | B．whatever | C．whichever | D．whenever |
How surprising ______ he should have refused to come !
| A．is he that | B．he is that | C．is it that | D．it is that |
. He arrived at last, ________ .
| A．tired and hungrily | B．tiredly and hungrily |
| C．tired and hungry | D．tired and hunger |
E-mail, as well as telephones, _____ an important part in daily comunication.
| A．is playing | B．have played | C．are playing | D．play |