Thank you so much for ________ me find my book.
| A．helping | B．helps | C．help | D．to help |
He is an explorer ________ a sailor.
| A．so | B．but | C．or | D．rather than |
________ our surprise, he failed the math exam.
| A．In | B．On | C．To | D．At |
He ________ an English club last year and has improved his English a lot.
| A．protected | B．produced |
| C．joined | D．Received |
—What a heavy rain!
—So it is.I prefer ________ rather than ________ on such a rainy day.
| A．to go out; stay at home |
| B．to stay at home; go out |
| C．going out; stay at home |
| D．staying at home ; go out |
By the time I locked the door, I realized I ________ my keys at home.
| A．had repaired | B．had changed |
| C．had forgotten | D．had left |