__________ good exercise.
| A.Climbing hills is | B.Climbing the hill is |
| C.The climbing hills are | D.The climbing of hills are |
You will be successful in the interview __________ you have confidence.
| A.before |
| B.once |
| C.until |
| D.though |
These examples show that all individuals,__________ they are rich or poor, should be responsible __________ they are involved in law.
| A.if; when |
| B.if; as long as |
| C.whether; as long as |
| D.whether; since |
__________ you may have, you should gather your courage to face the challenge.
| A.However a serious problem |
| B.What a serious problem |
| C.However serious a problem |
| D.What serious a problem |
__________ we all tried our best, we lost the game in the end.
| A.As |
| B.Although |
| C.Because |
| D.Since |
__________ I couldn't fully under-stand what he wanted to show in his paintings, I thought his works quite impressive.
| A.As |
| B.Since |
| C.If |
| D.While |