Although he couldn’t ____ my success, he_____ me that he would give whatever help I needed.
A. be ensured, assured
B. assured, ensured
C. assure, ensured
D. ensure, assured
The situation _____ immediate action.
A. calls up
B. calls for
C. calls over
D. calls out
Scientists hope they can _______ in cloning.
A. make a breakthrough
B. make a fuss
C. make a backbreaking
D. make a faith
She fetched the bricks four_____ in order to save time.
A. in time
B. at a time
C. on time
D. at the same time
微信支付 
支付宝支付