We believe that ________ to a free trade destroy wealth and benefit no one in the long run.[ ]

When did you return to China?—_________________.

ember 11, the so-called double 11 shopping carnival, his mother spent a lot in buying clothes __________ his father bought tens of latest digital devices.

When I opened the door, I found my father sitting in his chair, completely _____ in the humorous stories he was reading.

What subject do you like best, Judy—____. I can learn about famous mountains and rivers.