On summer days, people enjoy _____swimming in the river.

ou go by train, please see to it_______ you takean express, _______ that stops only at big stations

s a photo of _________ when theywere young.—OK, how happy they both looked!

Passengers on board aren’t allowed _____ calls duringtake-off.

What do you want to be when you grow up-I want to be_______ social worker. Many people are ingreat need of our help.