21：TOEFL is a test for students _______ native language is not English. A：that B：who C：whose D：which ...

15：Since this road is wet and slippery this morning, it _______ last night. A：must rain B：was raining C：must have rained D：may rain ...

9：How much has the company ________________ this year? A：brought in B：brought down C：brought out D：brought about ...

3：______ book is interesting to her although reading is her hobby. She likes reading literature, not politics or economics. A：None of B： No C： Not every D： ...

16：Generous public funding of basic science would _________ considerable benefits for the country’s health, wealth and security. A：result from B： settle down C： lie in D： lead to ...

10：We’ll visit Europe next year ______ we have enough money. A：provided B： unless C： until D： lest ...

5：The old houses are being pulled down to ______________ a new office block. A：make room for B：make use of C：take the place of D：supply with ...

24：In another year or so, you _____ all about it. A：forget B：would forget C：have forgotten D：will have forgotten ...

18：The police investigation discovered three young men were _____ in the robbery． A：joined B：included C：connected D：involved ...

13：We moved to the front row ___ we could hear and see better. A：so as B：so that C：because D：such that ...