His lack of professional knowledge _______for the failure of the experiment.
A．accounted B．explained C．counted D．contributed
Tom was about to close the window his attention was caught by a bird.
A．when B．if C．and D．till
—Do you have any idea why Mark is leaving?
—No. In fact，everyone is _________about it.
A．doubtful B．curious C．enthusiastic D．annoyed
—Mary looks down today. What is up?
—Well，________happened between Mary and me is none of your business.
A．wherever B．whoever C．whatever D．no matter what
The girl who is studying at the art college has a_______ for music and dance.
A．gift B．present C．power D．strength
—My teacher punished me this morning.
—Why? You’ve done nothing wrong, ______ I can see.
A．as long as B．as far as C．as well as D．as soon as
