I’ll probably see you on Sunday； ， it will be on Monday.
| A．thus | B．then | C．after all | D．if not |
I’m protecting myself mosquitoes.
| A．from | B．in | C．on | D．at |
What must be done if wildlife protection is?
| A．success | B．succeed | C．successful | D．to succeed |
----____ I take the book out?
---- I’m afraid not.
| A．Will | B．Must | C．May | D．Need |
Food, ______ and shelter are the three most necessary things for people to depend on.
A. clothes B. clothing C, cloth D. dress
I into robots and used to make mobile phones as well as help with medical operations.
| A．have put | B．have been put | C．had put | D．had been put |