You’d better carry a(n)      tyre in the back of your car in case it breaks down on the way.

The medicine tastes ________ , but works ________.

The kid is not ______ to work out the problem, for it’s too difficult.

After the explosion，the roads are full of ________people leaving the city. 

Are you still hoping and waiting for someone somewhere to come to your rescue, wave a magic stick and immediately change your life for _________?