英语难题 高手进 15分钟解决1. ___ he wants to fire you, I suggest you st

英语难题 高手进 15分钟解决
1. ___ he wants to fire you, I suggest you stop wearing sport clothes in the office.
A If B. Since C. Until D. Unless
2. In order to continue to learn by ourselves when we have left school, we must ____ study how to learn in the school now.
A. in all B. after all C. for all D. at all
3. Whoever is ____ advanced can pass this test.
A. more and more B. more or less C. no more D. any the less
4. -How do we do the cleaning?
-Do it ___ ；Sweep the floor, wipe the desks, rub the windows and put everything in order.
A.as usual B. as follows C. as following D. like that
请给出解释因由