73.She did her work _____ her manager had instructed.

　 until

　 when

　 though

正确答案：A

解析：

解析:语法规则。as引导一个方式状语从句,修饰主句谓语动词did。instruct表示“指示”、“吩咐”时为及物动词,若用until,when或though,至少在语法上就讲不通。as却不受此限制。她按经理的指示工作。

230.Which of the following sentences expresses a future action?

229.It is essential that he __________ all the facts first.

228.The following are all dynamic verbs(动态动词)EXCEPT ______.

227.Which of the following sentences expresses a fact?

226.If it ______ tomorrow, the match would be put off.

225.Which of the following is NOT an imperative sentence?

224.Which of the following italicized parts serves as an appositive?

223.Which of in the following phrases indicates a subject-predicate relationship?

222.Which of the following sentences is grammatically INCORRECT?

221.All the following sentences definitely indicate future time EXCEPT _______.