The Yangtze River, China’s longest, has been affected by a severe drought, _____ the lowest level of rainfall this year since 1961.
Access the mountain-town is often difficult because of the bad roads.
Once out of the earth’s gravity, the astronaut is by the problem of weightlessness.
The doctor telephoned to say that he couldn’t ____ the meeting because he had to ___ a patient.
When we are in a new place, we must __our manners and try to follow the customs of the place.
In the early morning all of us stood at the top of the mountain __ east of the city, watching _____burning sun rising.