1．keep up with 　　　 跟上，赶上

2．decrease by 减少了

3．respond to 对......做出回应

4．in case 以防万一

5．due to 由于

6．in addition 此外

7．work out 设法弄懂

8．without doubt 毫无疑问

9．a variety of 各种各样的

10．be suitable for 适合......

11．apply for 申请

Ⅳ.选词填空

选用上述短语的适当形式填空

1．Without doubt，she is the best nurse in the hospital.

2．I lost my card so I have to apply for a new one.

3．The machines hall contains a variety of machine tools.

4．All these dishes are suitable for vegetarians.

5．We must keep up with the advanced countries.

6．How to express concern or respond to one's concern?

v.＋­ous→adj. v.＋out →复合短语 cautious　 小心的

numerous 大量的

anxious 焦虑的 work out 算出；产生什么结果

bring out 使显现；弄明白

let out 发出；放出；泄露；出租