I looked for my keys___________，but still couldn't find them.

A.somewhere B.anywhere C.nowhere D.everywhere

Do you know that your grandfather was born___________ June，1953？

A.on B.in C.at D.of

The relationship between kids and parents is___________ topic today in China.

A.hot B.hotter C.hottest D.the hottest

___________fun it is to fly kites in the fields in autumn！

A.How B.What C.What a D.What an

This T-shirt is too expensive. Can you show me a___________ one？

A.more expensive B.cheap C.cheaper D.cheapest

In order to keep safe，we ___________keep away from crowded places.

A.may B.can C.need D.should

By the year 2016，Johnson Churchman ___________two master degree（硕士学位）

A.had had B.had C.have D.has had

People ___________of serious pollution，so they began to take action to protect the environment.

A.warned B.are warned C.has been warned D.were warned

We won't make any greater progress ___________we work much harder than ever.

A.unless B.if C.and D.or

___________our parents ___________our class teacher is worried about our studies.

A.Both…and B.Either…or C.Neither…nor D.Not only…but also