6. 你家總是這么整潔——你在有三個孩子的情況下是怎么做到的？

Your house is always so neat―how do you        with three children? (manage)

5. 眾所周知，提前做好全面的研究是非常重要的。

As everyone knows,doing a thorough research ahead of time      .(be of+n.)

4. 我們應當做好準備以應對不同的情況。假如他不接受我們的方案怎么辦？

We should be well prepared for different situations.      ？(what if+從句)

3. 小心！一旦被加熱，這種材料很容易著火。

Be careful!This material will catch fire easily        .(once-\-v. -ed)

2. 每一次任何緊急情況突然發(fā)生時，你都要保持冷靜。

You must keep calm        any emergency        suddenly.(every time+從句)

根據(jù)中文意思及括號內的提示完成句子

1. 一定要準備好一切；否則這次你將徹底失敗。

        ，or you will get a thorough failure this time. ( do/does/didhv.)

10. We must learn to recognize        (那些偽裝的撒謊者) and try not to be cheated by them.

9. That thief        (偽裝成一名清潔工) and entered that office building.

8.        (就.. 而言) dealing with emergencies?Jack is the best of all the people here.

7. Hearing the police sirens,the thieves        (四處逃散) ，but finally they were all caught.