My alarm clock________at six in the morning.Then I get up and run for half an hour.
His sister wanted to have him _____ the radio, but he had had it _____ already.
—Why not go camping this weekend? —_______.
Unluckily, John’s father __________murder when he was in his forties.
The explorer insisted ________ his advice was of ________.
Life on Mars will be better than ________on Earth ______ many ways.