【单选题】【消耗次数：1】
I haven’t finished my composition . I ________ for two hours and a half.
①
have written it
②
have been writing it
③
wrote it
④
am writing it
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相关题目
【单选题】
I haven’t finished my composition . I________ for two hours and a half.
①
have written it
②
have been writing it
③
wrote it
④
am writing it
【单选题】
I haven’t finished my composition. I ___ for two hours and a half.
①
?have written it
②
?have been writing it
③
?wrote it
④
am writing it
【单选题】
I have been looking forward to ____ from my parents.
①
：hear
②
：being heard
③
：be heard
④
：hearing
【单选题】
I often ______ the cooking for my family, but recently I have been too busy to do it.
①
will do
②
do
③
am doing
④
had done
【单选题】
（ ） he finished writing the composition in such a short time surprised us all.
①
What
②
How
③
That
④
If
【单选题】
I am ____ grateful for the many kindnesses you have
shown my son.
①
excessively
②
much
③
certainly
④
exceedingly
【单选题】
The reason _________ I am writing this letter is to tell you about the meeting on Saturday.
①
because
②
why
③
for
④
as
随机题目
【单选题】
下列说法中错误的是（ ）
①
公有继承时基类中的public成员在派生类中仍是public的
②
公有继承时基类中的private成员在派生类中仍是private的
③
私有继承时基类中的public成员在派生类中是private的
④
保护继承时基类中的public成员在派生类中是protected的
【单选题】
类B是类A的公有派生类，类A和类B中都定义了虚函数func(),p是一个指向类A对象的指针，则p->A::func()将（）
①
调用类A中的函数func()
②
调用类B中的函数func()
③
根据p所指的对象类型而确定调用类A中或类B中的函数func()
④
既调用类A中函数，也调用类B中的函数
【单选题】
以下基类中的成员函数表示纯虚函数的是（）
①
virtual void tt()=0
②
void tt(int)=0
③
virtual void tt(int)
④
virtual void tt(int){}