As your instructor(教师) advised, you ought to spend your time on something ____ researching into.
The palace you visited yesterdayabout five hundred years ago.
—Shall we go shopping? —Sorry, webuy anything now because none of the shops are open.
The boy mademistakes in this exam so he got a higher grade.
—Has Tom answered your call? —No, but I’m sure heback soon.
The ______ house is his.