Tom kept quiet about the accident ________ lose his job .
| A.so that | B.in order not to | C.so as to not | D.in order that | 
—Let's go Dutch for this supper,OK?
 —No,________ this time,as a reward for all your help.
| A.it's my treat | B.it's up to you | 
| C.let's talk about it | D.it doesn't matter | 
John went to the hospital alone. If he_______ me about it, I would have gone with him.
| A.should tell | B.tells | C.had told | D.told | 
When you _____ into the gallery, you feel as if you____ inside a fragile, white seashell.
| A.walking, are | B.walked, were | 
| C.walks, are | D.walk, were | 
The father often buys his son English learning materials, ____at encouraging him to learn English.
| A.aim | B.aimed | C.to aim | D.aiming | 
---You seem used to sleeping in the street.
 ---Oh, no. ______, I hate it, but I have nowhere to go for shelter.
| A.On the other hand | B.On the contrary | 
| C.It depends | D.Generally speaking |