I called you yesterday but you weren’t at home.— I ______ flowers in my garden at that time.

Do you think the first problem in this math test difficult?—Yes．I could work it out．

I’m looking forward _________dinner with you.

Suzhou is one of China’s _______ most famous cities. It’s ______ city with many places of interest.

In China when the traffic light is red, you ________ cross the road.