–– When did they arrive?
–– They ______two hours ago .They ______ here for two hours .
A．arrived; have arrived B．arrived; have been
C．got; have been D．reached; have reached
----It’s important_____ a foreign language.
----I agree with you. We should study hard.
A．of us to learn B．for us to learn C．of us learning D．for us learning
I ______ to think their jobs were ______ .
A．used; bored B．am used; boring C．am used; bored D．used; boring
The maths problem is ______ hard for us ______ solve.
A．so, to B．so, that C．too, to D．very, to
The girl was seen the piano at 4.00 yesterday afternoon.
A．to play B．play C．playing D．played
— Where ’s your mother ?
— She ________ Shanghai . She won’t be back ________ next week .
A．has gone to, until B．has been to, until
C．has been to ,after D．has gone to, after
