Mr Obama, who appeared to take the lead in the race in most battleground states, seemed to______ an air of caution throughout the first Presidential debate
Without_____ thorough understanding of China’s specific conditions, you can’t have ____ say over the only-child policy.
A a, the B the, a C a, a D the, the
– 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, ∕