---Don’t put the waste on the ground.
---Oh, I’m very sorry. I ________ the dustbin there.
| A．don’t see | B．isn’t seeing | C．didn’t see | D．haven’t seen |
Arrive late once more _____ you will be fired.
| A．and | B．but | C．so | D．or |
It is the first time that Michel _______ the Summer Palace.
| A．is visiting | B．visits | C．has visited | D．will visit |
He didn’t care, ________ he could have something to fill his stomach.
| A．in case | B．so long as | C．as if | D．even though |
--- Jenny, do you remember the first time we met?
--- Sure. You ______ the suitcase at the airport.
| A．were carrying | B．carried | C．have carried | D．had carried |
I have learned that clothes ______ online are of poor quality.
| A．bought | B．buying | C．to buy | D．having bought |