Are you afraid of _____ alone? A. sleep B. to sleep C. Sleeping
Some students in Shanghai e-bags for several months.
May I have a talk with you, sir? I've got important to tell you.
-I really hope to get in touch with Tony.[-Sorry, I don’t know ___________.
We can do a lot to stay healthy. __________, we should eat a balanced(平衡的) diet.
When you have difficulty, do remember to _________. Two heads are better than one.