He ran as fast as he could ______________ the people in trouble.

_____ a cold morning poor Mary went out to sell flowers. [ ]

The temperature now is much higher than______of 100 years ago because of more and more greenhouse gas.

Last night we watched ______ film on Channel 6.

Excuse me. Where is the museum?—It is quite far. It will take you half ___ hour to go there by _____bus.