Polders working together with embankment, sluice and ditch can block the flood.
举一反三
- At present, there are thousands of people ________around the clock to fight against the flood. A: are working B: worked C: working D: to work
- A-frames and cylinder block is held together by _____ to form a rigid structure.
- ______make good progress. A: Only by working hard they can B: By only working hard they can C: Only by working hard can they D: Only they can by working hard
- What is the name for a group of family doctors working in the same building together
- People who make music together, listen to music together , and dance to music together can be_______.