Sometimes smiles ______ be false, hiding other feelings like anger, fear or worry.

What do you think of the hotel?—There are no customers in the hotel. It ______ have the friendliest service.

Why did your uncle finally______ such a good chance to work abroad?—Because he wanted to do more for our country.

His shoes are cheaper than .

How old are you? —I’m fifteen. I was born_____1990. [ ]