____ certain that his invention will lead to the development of production.
A: That's
B: This is
C: It's
D: What's
A: That's
B: This is
C: It's
D: What's
举一反三
- ___certain that his invention will lead to the development of production A: That is B: This is C: It is D: It has
- You can't be certain of _ going to happen . A: what's B: that's C: it's D: how's
- In what areas were Marie's discoveries put to use? A: radioactive material production B: new medicine development C: medical research and treatments D: industrial mass production
- Professor Thring's mechanical coal miner ______. A: has already been seen by the Coal Board B: is his first invention C: looks like a TV camera D: is not yet in production
- What does the man suggest A: He’s looking for his glasses. B: He’s looking for his coat. C: He’s looking for his shoes.