____是一种参数,它是在明文转换为密文或将密文转换为明文的算法中输入的数据。
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You can't move in right now. The house _____ now.
A. has painted
B. is painted
C. is being painted
D. is painting
All the doctors in the hospital insisted that he ______ badly wounded and that he _______ at once.
A. should be; be operated on
B. were; must be operated on
C. be; was operated on
D. was; be operated on
The new library ____; it will be open next year.
A. had been built
B. was built
C. was being built
D. is being built
Peter is helping set tables in the hall, where John's birthday party ______.
A. is holding
B. has held
C. is held
D. will be held
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