He is only too ready to help others, seldom, ____ refusing them when they turn to him.
A. if never B. if ever C. if not D. if no
The traditional approach ____ with complex problems is to break them down into smaller, more easily managed problems.
A. to dealing B. in dealing C. dealing D. to deal
Someone called me up in the middle of the night, but he hung up ____ I could answer the phone.
A. as B. since C. before D. until
------ What made little Tony so unhappy and cry in his room?
------- _________to go biking with his brother.
A. Having not been allowed B. Not having allowed
C. Having not allowed D. Not having been allowed.
----- Sally is strongly against taking the trip to Hainan.
----- _______? It was she who suggested the plan.
A. How come B. What about C. Real D. Why not
Was it not until you began to work ____ how much time you had wasted?
A. did you realize B. that you realized
C. did you not realize D. that you didn’t realize
