Edward, you play so well. But I_____________you played the piano.
| A．didn’t know | B．hadn’t known | C．don’t know | D．haven’t known |
There was a big argument among the children about _________ move to a new house.
| A．if they should | B．that they ought |
| C．if should they | D．whether they should |
In their country August 31st is a national holiday,________ everybody dances in the streets.
| A．which | B．as | C．when | D．because |
He is so easy-going a man _________ everyone wants to work with.
| A．whom | B．that | C．as | D．/ |
He tried his best to solve the problem,________ difficult it was.
| A．however | B．no matter |
| C．whatever | D．although |
Only when medical expenses are reducedaccess to proper medical treatment.
| A．poor people do have | B．poor people can have |
| C．can poor people have | D．do have poor people |