The mobile phone is ______ used by many people ______  a communication tool.              
[     ]
A. widely;  for     
B. widely;  as            
C. wide;  as        
D. wide;  for
按要求做题。
1. Neither of my parents has gone abroad. (改为同义句)
My mother has ____________ gone abroad. ____________ has my father.
2. The population of China is 1.3 billion. (就画线部分提问)
___________ the population of China?
3. He has waited since he came here. (就画线部分提问)
___________  ___________  ___________ he waited?
4. It's three weeks since he left home. (改为同义句)
Three weeks ___________  ___________ since he left home.
5. He didn't go to the museum. I didn't go there, either. (合并为一句)
___________ he ___________ I ___________ to the museum.
—How are you getting on with your work?      
—I can't do it       any longer. I’ ll have get help.
[     ]
A. lonely        
B. Quietly
C. alone        
D. hard
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