1、主语从句练习单项选择题1._____ as much as one-fifth of all timber harvested is not used.A. The estimate B. The estimate C. They are estimated D. It is estimated that2. _____ wasonceregardedasimpossiblehasnowbecomeareality. A. That B. Which C. Who D. What 3. _____
2、 we have achieved is attributed to the guidance of our parents. A. Whoever B. Whatever C. However D. That 4. _____ yousaynowcan'tmakeupforwhatyou'vedone. A. Nomatter B. Whatever C. However D. That5. Although _____ happened in this developed country sounds like scien
3、ce fiction, it could occur elsewhere in the world. A. which B. what C. how D. it6. _____ she had forgotten to take her notebook. A. That occurred to her B. She occurred that C. To her that occurred D. It occurred to her that7. I am sure that ___
4、__ she said is wrong. A. which B. all C. this D. what8. We lost our way in the forest, and _____ made matters worse was that it was getting dark. A. that B. which C. it D. what9. _____ occurredtohimthathehadforgottentolockthedoorwhenhelefthome. A. This B
5、. It C. That D. These10. _____ or not is still uncertain. A. He's coming B. If he is coming C. That coming D. Whether he's coming11. It's _____ he'll be able to come. A. doubt whether B. doubtfulC. doubt it D. doubtful whether 12. Itis_____thatthebri
6、dgehasexistedformorethanthreecenturies . A. appeared B. risen C. said D. born13. _____ he saw both surprised and frightened him. A. That B. When C. What D. Which14. _____ is a spell of warm sunshine. A. What do we all need. B. What all we need
7、 C. What we need D. What we all need15. _____ is a pity that he should feel so upset. A. What B. That C. He D. It16. _____ a spoonful of soil can tell us so much about the structure and early history of the moon. A. Remarkable
