We couldn’t have picked ______ day for the picnic — it rained nonstop.
| A．a worse | B．a worst |
| C．the worse | D．the worst |
I decided to go to the library as soon as I ______.
| A．finished what I was doing |
| B．finished what I did |
| C．would finish what I was doing |
| D．finish what I did |
--- Don’t forget to bring my new books tomorrow afternoon.
--- No, I ______.
| A．don’t | B．do | C．won’t | D．will |
When he was alive, the old scientist used to say that knowledge ______ from practice and he gained his experience by doing a lot of practical work.
| A．was coming | B．had come |
| C．comes | D．would come |
He ______ articles for our wall-newspaper these three years, and he ______ about forty articles.
| A．has been writing; has written |
| B．has been writing; wrote |
| C．is writing; has been writing |
| D．has written; has written |
--- ______ Betty this morning?
--- Not yet, but she is sure to be here before noon.
| A．Have you seen | B．Will you see |
| C．Do you see | D．Did you see? |