--The plane is due to take off at 7∶50 from the airport.
--________ we fail to arrive there in time?
A. What if B. As if C. Even if D. Only if
--They ________ out the problem, but failed.
--What a shame ! I never thought it was going to happen like that.
A. managed to work B. managed working
C. sought working D. sought to work
--Let’s go there by taxi.
--It’s not far from here, I prefer ________.
A. walking to take a taxi B. to walk rather than take a taxi
C. walk to taking the taxi D. to walk rather than to take a taxi
They ________ the train until it disappeared in the distance.
A. saw B. watched C. noticed D. observed
As we all know, children are always ________ about everything fresh to them.
A. strange B. amusing C. curious D. conscious
Whether by accident or ________, he arrived too late to help us.
A. purpose B. aim C. design D. chance
