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
Over time my memory has developed much that, like an elephant, I never forget anything I have been told.
A. really B. such C. too D. so
I developed very slowly and it took nearly two hundred years I was built as an analytical machine by Charles Babbage.
A. before B. after C. long D. short