Directions: Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the one answer that best completes the sentence.
The wild flowers looked like a soft orange blanket the desert.
A. covering B. covered C. cover D. to cover
He is not _______ as a leader but he has gained _______ in teaching.
| A．success; many experiences | B．a success; much experience |
| C．great success; an experience | D．success; a lot of experience |
He was ______ medical student before he turned _______ engineer.
| A．a; an | B．the; the | C．a; / | D．/; an |
He’s so ill that his father has to send for _______ doctor.
| A．one | B．some | C．a | D．the |
Jumping out of _______ train running at a speed of 200 kilometers per hour is quite _____ dangerous practice.
| A．/; the | B．/; a | C．a; a | D．the; the |
________ your spirits. Try again and you’ll succeed.
| A．Catch up | B．Catch on | C．Keep up | D．Keep |