It was with the selfless help of our teacher ______ we realized our dream.
| A．that | B．who | C．when | D．how |
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 |