1 After a pleasant summer vacation, the scientists continued their research work. (GET DOWN TO)

After the happy summer holiday, the scientist got down to research again.

2 Professor Smith’s lecture on poetry left a deep impression on the audience (MAKE A…IMPRESSION ON)

Doctor Smith's lecture about poesy made a deep impression on the audience.

3 young people like to go camping rather than watching TV at home (PREFER)

Young people prefer camping to wathing TV at home.

4TOM glanced at the envelope and immediately recognized his father’s signature (GLANCE AT)

Glancing at the envelope, Tom recognized the signature of his father.

5Telephone becomes the most convenient way for people to communicate.

6Storm led to the interruption of the communication with the ships at sea.

7 If you have any trouble, please turn to me without hesitation.

8 You stare at disabled people on the street It is impolite to stare (STARE AT)

It is impolite for you to stare at the disabled person on the street.