帮忙回答几道选择题呗~~十分感谢！

7.This is Binhai College,and Mr.Wang is president of college.
A.a,/,a B.a,/,the C.the,a,/ D./,the,the
8.His plane is due at 10.Listen, plane is in at airport
A.a,a B.the,the C.the,an D.a,an
9.London is nice city ,and it is old city,too.
A.a,an B.an,a C.the,a D.a,the
10.Is this apple tree?No, tree is orange tree.
A.an,a,the B.a,the,an C.an,the,an D.the,the,an
11.The teacher the blackboard yesterday.He used a computer.
A.used not B.didn’t use C.does not use
12. you in the library this morning?
A.Do,studied B.Did,studied C.Did,study
13.The students to have a party.They did in last week.
A.planed B.planned C.plan
14.Lily to the beach with Prof.Green.They had a swim there.
A.goed B.goes C.went
15.Prof.Green sick yesterday.He a fever.Now he still feels weak(虚弱).
A.is,has B.was,have C.was,had

7.This is Binhai College,and Mr.Wang is president of college.(D)
A.a,/,a B.a,/,the C.the,a,/ D./,the,the
8.His plane is due at 10.Listen, plane is in at airport(B)
A.a,a B.the,the C.the,an D.a,an
9.London is nice city ,and it is old city,too.(A)
A.a,an B.an,a C.the,a D.a,the
10.Is this apple tree?No, tree is orange tree.(C)
A.an,a,the B.a,the,an C.an,the,an D.the,the,an
11.The teacher the blackboard yesterday.He used a computer.(B)
A.used not B.didn’t use C.does not use
12. you in the library this morning?(C)
A.Do,studied B.Did,studied C.Did,study
13.The students to have a party.They did in last week.(A)
A.planed B.planned C.plan
14.Lily to the beach with Prof.Green.They had a swim there.(C)
A.goed B.goes C.went
15.Prof.Green sick yesterday.He a fever.Now he still feels weak(虚弱).C)
A.is,has

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