—You don’t see the professor from Singapore quite often, do you? —No, we only meet ______．

When Helen saw her tutor nod ______ to her, she calmed down and went on with her performance .

 Eating properly and exercising _______ make one enjoy a longer and healthier life.

— I’d like to go home now. — Why not stay here for the night? It is so late now. ____, it is raining so hard.

–- Excuse me, would you mind answering a few questions?--- Well, I don’t know. I’m in a hurry _______.