What's the matter _____ they still haven't answered the telegram?
| A.when | B.that | C.though | D.however | 
_____ I catch a cold, I have pain in my back.
| A.Every time | B.Though | C.Even | D.Where | 
I hurried _____ I wouldn't be late for class.
| A.since | B.so that | C.as if | D.unless | 
_____ he comes, we won't be able to go.
| A.Without | B.Unless | C.Except | D.Even | 
We'd better hurry ______ it is getting dark.
| A.and | B.but | C.as | D.unless | 
You'll miss the train ______ you hurry up.
| A.unless | B.as | C.if | D.until | 
