中国大学MOOC: My nephew______ from home for three days now, and I am beginning to worry about his safety.
举一反三
- Jack ____________from home for two days now, and I am beginning to worry about his safety.
- Jack ______from home for two days now, and I am beginning to worry about his safety. A: has been missing B: has been missed C: had been missing D: was missed
- Jerry ____ from home for two days now and I am beginning to worry about his safety. （ ） A: had been missing B: has been missed C: was missed D: has been missing
- My dog______from home for three days now, and I am so worried about its safety. A: has been missed B: has been missing C: had been missing D: was missed
- Jack _______on the project day and night for two months now, and I am<br/>beginning to worry about his health. A: has been working B: would be working C: had been working D: was working