A: When is Mother's Day?

B: 1.________

A: What do you 2.________on Mother's Day?

B: I want to 3.________（写封信）to my mother.

A: I want to 4.________（打视频电话）.

【答案】1. It's on the second Sunday in May. 2. want to do 3. write a letter 4. make a video call

【解析】

略