4. The purpose of her study was to .
| A．watch the wild chimps in cages | B．gain a doctor’s degree |
| C．understand and respect the lives of chimps | D．live in the forest as men can |
Tom got to the hospital in time that day, ________the first bus.
| A．catching | B．to have caught |
| C．to catch | D．caught |
--Why is the road so crowded?
--The two underground lines ________.
| A．are built | B．have been built |
| C．are being built | D．have been building |
--If you are admitted to a key university, ________ as a prize?
--I’m looking forward to being paid for a journey to Tibet with my friends.
| A．What you expect your father will offer you |
| B．Do you expect what your father will offer you |
| C．What do you expect will your father offer you |
| D．What do you expect your father will offer you |
When you finish reading the book, you will have________better understanding of ______life.
| A．a, the | B．the, a |
| C．/, the | D．a, / |
--Alvin, are you coming with us?
--I'd love to, but something unexpected ________.
| A．has come up | B．was coming up |
| C．had come up | D．would come up |