1.Can you tell me___________?
A.how does ORBIS get enough money B.how ORBIS does get enough money
C.how ORBIS get enough money does D.how ORBIS gets enough money
2.—Must we finish the exercise today?—No,you_______.
A.mustn't B.don't have C.don't have to D.needn't to
3.— I wonder if he ________us in the discussion tonight.
—I believe if he ________his homework,he will join us.
A.will jion,will finish B.wil join,finished C.will jions ,finishes D.jions,will finish