He had ever climbed this mountain several months before, but _____ he couldn’t find the way this time [ ]

China _______ rapid progress in space technology inthe last 10 years.

I always go to sleep the light .

20 —Why was __ you lost all your keys？—It was because of my carelessness

Itis reported that the government has _________ the outbreak of violence bysending a large group of soldiers to police the area