He is _________ at _______ stories than me.
We know that about seventy percent _____ the earth _____ covered by water.
The question is _________ .
-- Must I return the book this week?-- No, you ______. You can _____ it for 20 days.
– You shouldn’t stay up late tonight.–Thanks, I will go to bed earlier. .
The president of the USA around the Palace Museum last month.