Millions of Chinese students watched Internet course ________ they stayed at home.
A.when B.until C.although D.before
Thanks to my teacher, he always encourages me________ harder.
A.work B.working C.to work D.works
A new park ________here next year. Then people nearby can come for a walk in the free time.
A.will build B.will be built C.is built D.was built
—Do you know Mr. Smith from America?
—Yes, I________ him since 2008.
A.know B.knew C.have known D.will know
—Listen! Is Lily singing in the classroom?
—No. It _____ be Lily. She has gone to Paris.
A.may not B.needn't C.can't D.won't
The boy ________ his bike and hurt himself because of the heavy rain.
A.took off B.turned off C.set off D.fell off
