I find _______necessary to do everything we can ____________protect the environment.
| A．it; do | B．this is; do to |
| C．it; to | D．it; in order that |
With the help of the new technology, you __ e-mail your friends by mobile phone.
| A．can | B．must | C．need | D．should |
Peter will cook for his parents __ the International Day' of Families comes.
| A．unless | B．when | C．until | D．though |
Martin and his friends didn’t eat up all the food they ordered, __ they took the rest away.
| A．for | B．or | C．so | D．as |
The baby feels _________ while his mother holds him in her arms.
| A．save | B．safe | C．safely | D．safety |
I can’t connect my computer to the Intemet. There must be ______ wrong with it.
| A．something | B．everything | C．anything | D．nothing |