The electronic red-packet has been so ______ that AliPay and Tencent Wechat compete against each other openly and secretly since the beginning of this year.
________ hard one may work, one cannot master a foreign language in a month or two.
________ I really don't like art, I find his work impressive.
________ he has limited technical knowledge, the old worker has a lot of experience.
The village has developed a lot ________ we learned farming two years ago.
—Where's that report?—I brought it to you ________ you were in Mr.Black's office yesterday.