P21 R-1-2 3. Listen and tick (√). 听一听，勾一勾。

1. G: What do you do on Sundays?

   B: I usually clean my room.

2. B: When do you have a math class?

G: I usually have a math class at 9:00 a.m.

3. B: Which season do you like best?

   G: I like spring best.

   B: Why do you like spring?

   G: Because I can go for a picnic.

4. G: When is American Thanksgiving Day?

   B: It’s in November.