So difficult______ it to acquire a large vocabulary without the help of a teacher that he was close to giving up .
Ray is a new graduate, and it seems that he has difficulty in dealing with ________ problems arise.
- These apples look very beautiful. - They ________. See the price $ 3.99 a pound. Very expensive, aren’t they?
- Have you known each other for long? - Not really. ________ we started to work in this school.
________ with some research materials, he decided on three possible approaches in his experiment.
- Remember the first time we ________, Ed ? - Of course, I do. You ________ a song on the stage.