Can I go to the park, Mum?—Certainly. But you ______ be back by six o’clock.

On our way home, our bikes______, so we had to walk home.

Alison, I’m sorry. I can’t come to the wedding with you tomorrow morning. — ________? — My grandma was severely ill, so I have to stay in the hospital to look after her.

Don’t worry. The plane ______ at 8 a.m. There is still time left.

I don’t know how _______ this weekend—Why not consider going hiking in JingYue Park? There are many places of interest there.