There was a big dog ______ in front of Mr. Hill’s house, so David didn’t dare to go near it.
The experts advise _______ our army _______ modern weapons.
This dictionary is at least three times as thick as you borrowed from the library.
He _______ have completed his work;otherwise, he wouldn’t be enjoying himself by the seaside.
It’s time that you __________ the whole book.
The of the book makes it suitable for children.The man is considering the question as .