He ___ be in the garden.He must be in the room.‘
When we saw the road with snow, we decided to spend the holiday at home.
—Has Tom finished his task yet?—I’m not sure. But he _____ on it last week
It was with the help of the local guide the mountain climber was rescued.
Harry is feeling uncomfortable. He _______too much at the party last night.
A clean environment can help the city bid for the Olympics, which ________ will promote its economic development.