______ the great diversity in social behaviour and habits between different types of ants, most of them have the same basic physical structure.

Special heat sensors on the front of the rattlesnake’s head enable it ______ to detect the presence of prey in the dark ______ to strike its victim accurately.

Peter is leaving to go back to England, ______ we are holding a farewell dinner for him.

The instructor told the young climbers to hold on to the rope with ____ hands.

The train doesn’t stop at ____ station along the way, but it stops at ____ of the main ones.

Unfortunately, our local library had ____ books on the subject, so I’m going to the city library tomorrow hoping to find ____ more.

When I went to collect my jacket from the dry-cleaner’s, the assistant said that he ____ it but ____ able to remove the stain.