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543] He is too careless and he _______ keys.

[譯文] 他太粗心了，老是掉鑰匙。

　 A. always lost 　 B. always loses

　 C. is always losing 　 D. will always lose

[答案及簡析] C。 is always doing sth. 是一個句型，"老是做…"。

542] Please write your composition ________ line to leave space for the teacher’s correction .

[譯文] 請隔行寫你的作文以便留下空間供老師評改。

　 A. one another 　 B. every other

　 C. any other 　 D. each other

[答案及簡析] B。 every other line 隔行。

541] _______ are the days when the teachers were looked down upon .

[譯文] 老師被瞧不起的日子一去不復返了。

　 A. Gone 　 B. Go

　 C. To go 　 D. Going

[答案及簡析] A。 Gone are the days when…是一個句型。

540] Mr. Wang was such a good teacher _______ the students love and respect.

[譯文] 王老師是一個受到學生熱愛和尊敬的好老師。

　 A. who 　 B. whom

　 C. that 　 D. as

[答案及簡析] D。 such…as..引導的定語從句。

539] Until the present century, ________ demand for natural gas.

[譯文] 直到本世紀，對天然氣的要求幾乎沒有。

　 A. little 　 B. and little

　 C. there was little 　 D. was there little

[答案及簡析] C。 there be…句型本身就是倒裝結構，不需要再倒裝。

538] By the end of this year, we _____ 2000 English words.

[譯文] 到本年尾，我們將記住2000個單詞。

　 A. will learn 　 B. would learn

　 C. have learned 　 D. will have learned

[答案及簡析] D。 在有by the end of 引導的短語中，句子的時態要用完成時態。

537] _______ knows the truth will tell you about it , I think .

[譯文] 我想，知道真相的任何人都會告訴你的。

　 A. Who 　 B. No matter who

　 C. Whoever 　 D. B and C

[答案及簡析] C。 此句有強調的意思，故選C。

536] The head engineer is in ________ the project .

[譯文] 主任工程師負責這項工程。

　 A. his charge of 　 B. the charge of

　 C. charge of 　 D. one’s charge

[答案及簡析] C。 in charge of　固定搭配，"負責"。

535] ______ began our new lesson.

[譯文] 這樣我們的新課就開始了。

　 A. But 　 B. Such

　 C. Thus 　 D. So that

[答案及簡析] C。 副詞Thus位于句首，要完全倒裝。

534] I didn’t manage to do it _____ you had explained how.

[譯文] 知道你解釋了后我才能把此事做好。

　 A. until 　 B. unless

　 C. when 　 D. before

[答案及簡析] A。 not …until..結構，"直到…才"。