__world, where computers rule ourwork and life, online searches have become _____necessity.

________ that Tom got inside the room to see what was going on. [ ]

Stephen Hawking got more than 380, 000 followers in two hours _____first message on Weibo.

单项填空Only in this way______ get ready for the coming mid-term examinations.

____under the tree was a charming girl aged about seventeen or eighteen.