If you have a job，________yourself to it and finally you’ll succeed.
A．do devote B．don’t devote
C．devoting D．not devoting
Mary is the only one of the teachers who ________ a little Chinese because she is one of my friends who ________ been to China.
A．know；have B．knows；has
C．knows；have D．know；has
．________ surprising it is you should not know what has happened!
A．What B．How
C．That D．It
Not until I came home last night ________ to bed.
A．Mum did go B．did Mum go
C．went Mum D．Mum went
It was ________ he came back from Africa that year ________ he met the girl he would like to marry.
A．when；then B．not；until
C．not until；that D．only；when
Barry must have visited the Eiffel Tower before，________he?
A．mustn’t B．hadn’t
C．hasn’t D．needn’t
