They had all the children well looked after ______their parents relieved (放心)

______ those troublesome messages, you’d better not give out your number to anyone whom you don’t know.

—How was your trip?—Fine but ______．Milan was interesting．It’ s bigger than I expected, however a little ______ and dirtier．

The _______ performance ________ everyone present.

I can’t stand _____ loudly before a crowd of people.