Haven’t you enough common ________ to know that it is unwise to go outside in such a hazy (雾霾的) day? You may get lost.
It ____I who _____leaving for London.
Mr Smith, together with his children, ____arrived.
About 20 percent of the work ____done yesterday.
Ten thousand dollars _____quite a large sum.
This is one of the best novels that ____appeared this year.