Tom had to______ the invitation to the party last weekend because he was too busy.

Renmin Road is always crowded with traffic and people, it’s one of the _______ streets.

Don’t put off ____ to the doctor when you are ill.

So you missed the lecture given by thefamous professor — I got there 10 minutes before it finished

The math problem is too difficult.— Don’t worry! Let’s find a good way _____ it.