John was so sleepy that he could hardly keep his eyes ___.
| A．open | B．to be opened | C．to open | D．opening |
Many outside the US continue to see the country as one of opportunities , and despite being in a tough economic position , research shows many young Americans would ________it as well.
| A．submit to | B．contribute to |
| C．object to | D．subscribe to |
Our plane delayed taking off as we ran into a storm. We were ________ for several hours at the airport, waiting for the storm to clear up.
| A．figured out | B．built up | C．held up | D．taken off |
After years of learning Chinese, I still can’t understand everything , particularly in the rural areas. These are my most ______moment---when I can’t understand what people say.
| A．sceptical | B．awesome | C．optional | D．Awkward |
Built mainly on natural resources , the prosperity of the city was _______ and its economy almost collapsed when coal prices began to fall in 2012.
| A．sensitive | B．flexible | C．fragile | D．Subtle |
It is some time since the two parties came into conflict with each other , and now leaders of both sides are _________ a settlement of the dispute.
| A．consulting | B．negotiating |
| C．promising | D．Reasoning |