His father is engi
neer.
He designed such useful
machine
A．a an B. an a C. an an D. a a
Jenny is on holiday now. I wonder ______________________.
A. when she will come back B. when she came back
C. when will she come back D. when did she come back
Do you know the man who _________on the road just now?
A. lied B. lay C. lying D. laid
Johnny ran very fast _________he could catch the early bus.
A. so that B. as soon as C. some day D. of course
The Spring Festival __________ in January or February.
A. celebrates B. is celebrated C. celebrated D. was celebrated
— __________ will the meeting start?
—In about ten minutes, I think.
A. How long B. How soon C. How often D. How far
