You will succeed in the end ______you give up halfway.

   A. even if    B. as though    C. as long as    D. unless

 All the students ______come from America are here.

   A. who        B. which   C. /   D. that

Barcelona is situated        the northeast coast, about five hundred kilometers east of the Spanish capital, Madrid.

A. off         B. in C. on         D. to

Their work        other writers ever since.

   A. have influenced    B. has influenced     C. influenced    D. influences

This young tree could not have been damaged ______accident; I believe it was done _____ purpose.

A. by; on  B. for; with       C. by; with        D. for; on 

According to recent report, one of the rare animals,        crocodile, will be in anger of dying out in       2020s

   A. a, /          B. /, the   C. the, /   D. the, the

 He made      clear to his workmates that he would leave the company.

A. it  B. that      C. them    D. this

. Who could have ____ that within 10 years he’d be in charge of the whole company

A. indicated      B. promised     C. supported    D. predicted

This maths problem is        that one．

 A. not so easy as   B. more easy than   C. as easier as D. easy than

 Some people find the film Avatar difficult______.

   A. to understand     B. to be understood  C. understood           D. being understood