Scientists generally agree that Earth's climate will warm up over the next 50 to 100 years ________ it has warmed in the 20,000 years since Ice Age.
We paddled over and climbed on to the steamboat, as quiet as mice.
Determined to try out “Happy Girls”, she from home without telling her parents.
To learn English well, we should find opportunities to hear English _____as much as we can.
He is ________my job while I am on holiday.
A balanced diet can be better to our health when ______ with regular exercise.