There is also a fierce debate over the question ______ human cloning experiments should be allowed.
| A．that | B．what | C．which | D．whether |
You’re usually such a mild person, but you ______ in a bad mood for the last week.
| A．had been | B．were | C．were to be | D．have been |
— What do you think will prove to be the best thing that has ever happened to you? — ______.
| A．Laying off | B．Getting laid off |
| C．Laid off | D．Lay me off |
This article deals with the extent ______ family life has changed over the past 30 years.
| A．in which | B．at which |
| C．to which | D．on which |
Our school motto reflects the importance we ______ to good manners, hard work and success.
| A．place | B．attach | C．pay | D．Turn |
It’s unwise to ______ you understand something when you don’t.
| A．speak up | B．find out |
| C．make out | D．make up |