_______ the crisis of economy (经济危机) getting more and more serious, the government is searching for ways to improve people’s life.
The foreigner was talking to the children in the park ______ he was familiar with them.
Frank ______ London by train which ________ at 8:30 next morning.
As you get older, your _______ towards the matter will change.
–Have you finished your experiment report, Jane? --Oh, my god! I’ve _______ forgotten all about that.
We should consider what use can we make ______ such material.