英语单选1.You can often hear him () in the next room every morni

英语单选
1.You can often hear him () in the next room every morning.
A.sings B.singing C to sing D sing
2.True friend should share() joys and sorrows.
A.each other B.each others C each other's D either
3.() great progress,you must work hard.
A.Make B.To make C.Making D.Made
4.Jane is an American who has come to England () the first time.
A.in B.at C.for D.on
5.Some people are rich ,() some are poor.
A.When B.While c.then D.what
6.Do you know how this accident()?
A.come about B come in C come on D come onto