Theworld'ssuppliesofpetroleum_______.
A: havebeengraduallyexhausted
B: havegraduallyexhausted
C: arebeinggraduallyexhausted
D: aregraduallyexhausted
A: havebeengraduallyexhausted
B: havegraduallyexhausted
C: arebeinggraduallyexhausted
D: aregraduallyexhausted
举一反三
- Theworld'ssuppliesofcopper（） A: havegraduallybeingexhausted B: aregraduallyexhausted C: hasbeengraduallyexhausted D: arebeinggraduallyexhausted
- Theworld’ssuppliesofcopper______. A: havebeengraduallybeingexhausted B: hasgraduallyexhausted C: aregraduallyexhausted D: arebeinggraduallyexhausted
- Theworld’sleadinghotelinvestmentservices...ivebilingualmembers.
- Theworld’sfirsttravelagencyrunbyBritishThomasCookcameintobeingintheyearof_____.
- TheWorld’sFairwon’tbeafinancialsuccess_____thereareenoughvisitors. A: lest B: provided C: if D: unless