I’m ___ duty today．I must clean the classroom _____ school．
| A．after; on | B．in; before |
| C．on; after | D．for; in |
of them enjoys traveling by plane.
| A．Each | B．All | C．Both | D．Every |
It takes me half an hour to Shanghai.
| A．to fly | B．flies | C．fly | D．flying |
So far, we 3000 English words.
| A．learned | B．have learned | C．studied | D．learn |
---John likes tomatoes.
---.
| A．So I do | B．So am I | C．So do I | D．So I am |
The boy is not to go to school.
| A．young enough | B．old enough | C．enough old | D．enough young |