—What were you doing at 8:00 last Sunday?
—I ______ rubbish with my classmates by Zijiang River.
A．picked up
B．am picking up
C．was picking up
_________of the two boys is from America. They’re from Canada.
| A．Both | B．Either | C．Neither | D．All |
On ______ sides of the streets are a lot of colorful flowers.
| A．each | B．both | C．either | D．all |
We should not eat ________junk food.
| A．too many | B． too much | C．many too | D．much too |
---Could you please sweep the floor? ---___________. I’m washing the shirt.
| A．Yes, sure | B．No problem | C．Sorry, I couldn’t | D．Sorry, I can’t |
It’s important for us_____ in good health.
| A．keep | B．keeping | C．to keep | D．kept |