She has succeeded in _____ the problem. A. solving B.solve C.to solve
My name ____ Jack. Liu Ying and Sun Mei ____ my friends.
Please help Jack ____ his bike. He can’t see it.
—Are the black shoes ____? —No. It’s ____.
—Does Mary know ____? —Yes, she knows ____.
—Excuse me, is Michael in black pants now? —No. He’s in ____ coat and ____ pants now.