He will have learned English for eight years by the time he _____ from the university next year

st of Prince Charles and Dianna’swedding ______ 2, 000, 000 pounds

The weight of the moon is only about _____ of that ofthe earth

How about the number of students playing on the playground? —— ＿＿＿＿＿.

Tom often thinks ________ talking.