You must concentrate your attention ______ the main contradiction involved in the problem.
A: on
B: at
C: to
D: of
A: on
B: at
C: to
D: of
举一反三
- You must concentrate more _______ your English. A: to B: in C: on D: at
- 中国大学MOOC: You must concentrate more _______ your English.
- We must concentrate our attention ______ efficiency.
- You<br/>should focus your attention on one question each time. A: originate B: concentrate C: repel D: surrender
- 4. Have you ever realized that attention ______ your pronunciation? A: must be paid B: must pay to C: ought to be paid to D: should be paid