He has his faults, but _________he is a good student.

I’m ______ a diet, since I put ______ weight easily.

Young people seem to have no time to spend with other people around them ______ giving so much attention to their own world.

After running past the finishing line, she was        .

_____ achievement, last week’s ministerial meeting of the environment here earned a low, though not a failing grade.

As there’s no non-stop flight to Athens, we will have to fly to the city       Paris and Rome.

Children need a lot to grow up, but ________ they need love and care.

------ What do you think of Tom? I want to recommend him ____ my manager.
------ Not bad.

If you cannot have a good command of grammar as well as precise usage of each word you’ve learnt, it is ________ for you to use English flexibly.