29. The government has taken some measures to solve the shortages of electricity, but it may be some time _______ the situation improves.
| A．since | B．when | C．unless | D．before |
He is old, so his son will _________ the farm.
| A．take charge of | B．in charge of |
| C．charge | D．be in the charge of |
In the 19th century the government _____ land to settlers willing to take care of it.
| A．advocated | B．separated | C．divided | D．distributed |
It ______ quite correct that happiness comes from thinking about things in a positive way.
| A．has turned out | B．has been turned out | C．is turning out | D．is turned out |
There's no bus now, and we can't get home _______ by taxi.
| A．rather than | B．other than | C．more than | D．less than |
— Did you know any Chinese, Joyce, before you arrived in Beijing?
— In fact, never _______ it.
| A．have I learned | B．I have learned | C．had I learned | D．I had learned |