The museum will open in the spring with an exhibition and a viewing platform____ visitors can watch the big glasshouses being built.
| A．what | B．where | C．when | D．why |
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 |