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
David didn’t give up ______ he had failed in the experiment four times.
A. if B. while C. though D. since
