— Isn’t it hard to drive downtown to work?
—Yeah, that’s why I ______ to work by train.
A．have gone B．have been going C．was going D．will have gone
— Shall we go and have a picnic at the weekend?
— ______. According to the weather forecast, there might be a cold front by then．
A．Why not B．We can wait C．No, let's not D．It depends
She is _____ newcomer to _____chemistry but she has already made some important discoveries.
A．the; the B．the; / C．a; / D．a; the
–Tom, what’s the matter with you? You look so worn out!
--Nothing serious. I ____ my new house all the day and I am afraid I won’t finish until tomorrow afternoon.
A．have whitewashed B．am whitewashing
C．have been whitewashing D．shall be whitewashing
Confronted with the complex international situation, we need a foreign policy that is more ____.
A．symbolic B．confidential C．controversial D．flexible
The incomes of skilled workers went up. ____, unskilled workers saw their earnings fall.
A．Meanwhile B．Moreover C．Therefore D．Otherwise
