He __________ well in the exam last week, so he __________ hard now.A. did, studied B. didn't, is studying C. didn't do, is studyingD didn't, studying
We planned to meet at 10:30 at the station last Sunday, but Bob didn’t ______ until 12:00.
Dreams are beautiful. However, to ______ them needs lots of time and work.
–Cathy, can you answer the door? I ______ the room. –I’m coming, mum.
–How can I get some ______ about the 2016 Olympic Games? --Why not search the Internet?
The running water makes the stones ______ very smooth.