Your father seemed worried about something this morning, why? — He wanted to ____________.

The man ______ be my father. My father is much taller.

My father to Nanning many times, so he knows it well.

Ask them their names and ____________,please. — OK. Mr. Zhang. I’ll do it right now.

These Maths problems are too hard to ______. Can you help me?—There are many ways, but the most important is to try your best.