We should prevent pollution ________ happily.
.The audience was _____ very young children so there was a lot of noise while the concert was going on.
.The lion is considered the king of the forest , for it is a(n)________ of courage and power.
.She wanted to know _________.
.--- Mike, what did our monitor say just now? --- Every boy and every girl as well as the teachers who _____ to visit the museum _____ asked to be at the school gate before 6:30 in the morning.
.The information he gave us is more important than _____ we got ourselves.