It was only when I reread his poems recently _______ I began to appreciate their beauty.
| A．until | B．when | C．that | D．after |
-- Robert is indeed a wise man．
-- Oh, yes．How often I have regretted _________ his advice!
| A．to take | B．taking | C．not to take | D．not taking |
John received an invitation to dinner, and with his work ________, he gladly accepted it．
| A．finished | B．finishing | C．having finished | D．was finished |
---I’m sorry．I’ve left my credit card home．And I don’t have enough cash for the meal．
--- Don’t worry．___________．
| A．I’ll invite you | B．It’s my pleasure to pay you |
| C．It’s my treat | D．Let’s go Dutch． |
_______, I have to put it away and focus my attention on study this week．
| A．However the story is amusing |
| B．No matter amusing the story is |
| C．However amusing the story is |
| D．No matter how the story is amusing |
Elephants have their own way to tell the shape of an object and _________ it is rough or smooth．
| A．不填 | B．whether | C．how | D．what |