	NGUYỄN TRẦN ANH KHOA \| Chat Online
	10/12/2021 09:55:05
	Tiếng Anh - Lớp 8 \| Tiếng Anh \| Lớp 8

They began doing their maths 30 minutes ago

3. They began doing their maths 30 minutes ago.
=> They have ………………………………………………………………………
4. It started to rain a day ago
=> It has.............................................………………………………………………