Rather than ____his car on the busy road, Mr. Green always prefers____ his bike.
| A．drive; to ride | B．driving; ride | C．to drive; riding | D．to drive; ride |
Knowing how to think clearly and how to speak correctly ________ one confidence.
| A．give | B．has given | C．have given | D．gives |
The visitors stood at the top of the mountain ________ east of the city, watching ______ burning sun rising.
| A．the; a | B．\; the | C．the; the | D．\; a |
_______ an important decision more on emotion（情感）than on reason, you will regret it sooner or later.
| A．Basing | B．Based | C．To base | D．Base |
When deeply lost in thought, _______ he often was, he would forget all about eating or sleeping.
| A．that | B．where | C．which | D．when |
Ever since Daming graduated from the university, he _______ in the present company for 15 years and he is now chief engineer of the company.
| A．worked | B．has been working | C．is working | D．works |