We ________ last night, but we went to the concert instead.
| A．must have studied | B．might study | C．should have studied | D．would study |
—If you are free，I’ll invite you to see a film tomorrow.
—.It couldn’t be better.
| A．I’m sorry | B．Thank you |
| C．That’s right | D．Don’t mention it |
This ruler is too short. I need a one.
| A．long | B．longer |
| C．more long | D．more longer |
Please remember nothing can be learned ______ hard work.
| A．by | B．at | C．without | D．for |
—Susan, go and join your sister cleaning the yard.
—Why ____? John is sitting there doing nothing.
| A．him | B．he | C．I | D．me |
the house on fire, he dialed 119.
| A．To see | B．Seeing |
| C．Having seen | D．Being seen |