Many parents tend to make their children study hard in the belief that good education will enable them to                                                                                   in the future.

Sex before                                  is strongly disapproved in some cultures.

Our professor                                    said we should turn in the assignment on Friday.

The computer has had an enormous                                                                                     on the way we work.

Domestic appliances like washing machines and dishwashers have made life much easier.

We arranged to meet at the station, but she didn’t                                                                                             .

                             - is natural environment in which plant or animals live.