Yes,it is.

Số học sinh đạt điểm khá trong trường là:

400 : 100 x 45 = 180 (bạn)

Đ/s : 180 bạn

chữ đệp

dong buồm

dai dẳng

trống giong cờ mở

đăng đi

1. I play / ’m playing tennis now. Can I call you back?

2. We usually swim / are swimming on Tuesdays and Fridays.

3. They don’t meet / aren’t meeting us. They’re too busy today.

4. My sister doesn’t get / isn’t getting much exercise at the moment. She has her final exams.