- It’s _____ hard problem for the twins that ____ of them can work it out.
| A．so; neither | B．such a; neither |
| C．so a; neither | D．such a; none |
My dad is often abroad on business.
A. travelling
B. on board
C. in a foreign country
The children were in trouble.
A. having good luck
B. in difficulty
C. in a traffic jam
Peter can learn the new words by heart.
A. keep...in mind
B. member
C. in memory of
Trust yourself and your own ideas.
A. Be sure B. Believe in C. Agree with
This problem seems difficult to solve.
A. looks at B. feels C. Appears