I recognized John （ ） he entered the room.

He had his book () at his own expense.

Neither Bill nor his parents（ ）at home.

The park was （ ） easy walking distance of our hotel.

It is necessary to () a large vocabulary in learning a language.

The boy is eager to （） knowledge in different fields.

Rubber differs from plastics()it is produced naturally and not in the lab.

Bill had drunk （ ） as he did but without any obvious ill effects.

The man said he would hit me （ ） I told him where the money was.

This passage is concerned with things that affect _________.

The effect of a volcanic eruption on climate may be to make it_________.

A recent poll suggested that if money were not an issue, most people （ ） not to work at all.