It’s said that the famous scientist will give us _________advice on maths study. —__________good news! I’m not good at it.

Could you tell me ________?—Ｏf course, last night.

There aren’t many people in the village since ______ of them ______ moved to the town nearby.

Don’t worry. Your mother is coming to help you. —_______ she doesn’t come and I am here alone?

What ________ if there ______ no water or air on the earth?