The Red Cross Society needs some nurses ________ are patient and skillful.
A.which B.who C.what D.whose
________ people go abroad, they have to bring their passports with them.
A.Until B.When
C.Because D.Before
It's raining，but the farmers went on ________in the field.
A.works B.working C.worked. D.work
________important memory is！We cannot work well without it.
A.How B.What a C.What D.What an
Li Na succeeded in ________ a Grand Slam singles title（大满贯单打冠军）On 5th June，2011.
A.win B.to win C.winning D.to winning
—Have you finished painting the fence, Elsa?
—No. I forget ________ it.
A.paint B.to paint C.painting D.painted
