Li Na had managed to ______ in motion an upsurge(高涨)of students learning tennis across Asia.
26.— Do you have any idea what Paul does all day?— As I know, he spends at least as much time playing as he ______.
25.The peace talks between the two countries have ______. No agreement was reached.
24. ______is known to all, the Amber Room belongs to the Russians.
23. Please remain _____until the plane has come to complete shop.
22.In many places in China, ______ bicycle is still ______ popular means of transportation.