—We need a new leader for our Helping Hands Club，but I don’t know_______.
—Why not Mary? She is always willing to help others.
A. what to choose B. how to choose C. when to choose D. who to choose
To improve his English，he spends _______one hour a day listening to English programmes.
A. at last B. at least C. at once D. at all
The art exhibition is really worth _______，and you’re sure to learn lot from it.
A. visit B. to visit C. visited D. visiting
For everyone’s safety，we _______ a1ways remember the law against driving after drinking.
A. could B. should C. might D. would
Linda, with her parents，_______ the Wolf Hill, and they will be back this afternoon.
A. has gone to B. have gone to C. has been to D. have been to
Wearing white can help people _______when they feel stressed.
A. fall down B. calm down C. look down D. come down
