The theory he sticks to ______ to be of no use in our studies.
| A．proves | B．prove |
| C．proving | D．be proved |
. _____ number of students in each class is on_____ decrease.
A The, a B The, the C A, the D A, a
– Really? Who will give_____ lecture? What is it about?
--- Professor Chen,_____ president of Beijing University. About pollution.
A the, a B the, ∕ C a, the D a, ∕
If he comes early than____ appointed time, so much____ better.
A a, the B the, a C a, a D the, the
Separated from his parents at_____ early age, the left-behind boy in this rural town had ____ very difficult life.
A the, ∕ B an, a C a, the D∕ ,a
Boxing Day is ____ public holiday usually celebrated on 26 December,_____ day after Christmas Day.
A the, the B the, a C a, the D a, a