题目内容
Our teacher is working ________ a set of new textbooks for middle-school students.
[ ]
A.for
B.over
C.on
D.about
答案:C
解析:
解析:
|
思路分析:根据空白后的语境可以判断出,此空应填介词 on,work on表示“从事于”是固定的动词短语.这句意思是“我们的老师正在为中学生编写一套新课本”. |
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Our teacher ____ in our school for 29 years and he ____ here when he was 23 years old.
| A.has taught has come | B.taught , comes |
| C.taught , came | D.has taught, came |