David is so curious that no one can ________ from finding out what is going on.
| A．hold him back | B．hold him up |
| C．hold to him | D．hold him down |
_____ the government recovers the vehicle purchase tax and the oil prices go up continuously, the sales of the vehicle in China are still increasing every year.
| A．When | B．Once | C．Since | D．While |
After the flooding, people were suffering in that area, _____ urgently needed clean water, medicine and shelter to survive.
| A．who | B．where | C．which | D．that |
-- Why didn’t you go to Mike’s birthday party yesterday?
-- Well, I _____, but I forgot it.
| A．should | B．would | C．should have | D．must have |
It is not how much we do but how much love we put into what we do _____ benefits our work most.
| A．when | B．that | C．what | D．how |
Evidence has been found through years of study _____ children’s early sleeping problems are likely to continue when they grow up.
| A．why | B．how | C．that | D．whether |