a variety of；communicate with；make a deal；hold back；be involved in；shake hands with；give away；on guard
（1）The citizens were warned to be

on guard

on guard

against a sudden night attack.
（2）-Have you got any good plans，Jack？
-Let's go to the charity to

give away

give away

some money and old clothes.
（3）The villagers built banks of earth to

hold back

hold back

the flood water.
（4）We shake hands when we

make a deal

make a deal

.It means， "We agree and we trust each other. "
（5）The couples who

communicate

communicate

well

with

with

each other quarrel little.
（6）We grow

a variety of

a variety of

crops，including cabbages，wheat and barley.
（7）We Chinese sometimes

shake hands with

shake hands with

each other when we meet for the first time.
（8）It's said that he

was involved in

was involved in

the attack on a woman.