In many countries, ______ good education is regarded as ______ key to success in the future.
| A．/; the | B．the; the |
| C．a; the | D．the; a |
I don’t think ____ possible to master a foreign language without much memory work.
| A．this | B．that | C．its | D．it |
Is ____ necessary to complete the design before National Day?
| A．this | B．that | C．it | D．he |
Was it during the Second World War_____ he died?
| A．that | B．while | C．in which | D．then |
Joan had often heard____ said that Marley had no money.
| A．it | B．this | C．that | D．one |
I hate___ when people talk with their mouths full.
| A．it | B．that | C．these | D．them |