Mrs.Smith finds it hard to clear up the mess,as her children are always ________ whenever she tries to.
His teacher told him that since his parents were working abroad, either his grandparents or one of his uncles ______ allowed to come to the parents’ meeting .
---It is known to all that this factory pours lots of waste water into the Changjiang River every year. ---- _________ near my hometown.
He didn’t attend the meeting last night, _________ he doesn’t know our plan for the picnic.
In 1778, Banks was elected ________president of the Royal Society, ________position he held for 42 years.
---You really appreciate Justin Bieber’s performances, don’t you? --- __________. I just like his soft voice.