It’s nearly seven o’clock. Jack ________ be here at any moment.
The reason why she couldn’t come to the meeting was_____ she had not been invited.
____ surprised me most was ______ they had finished it so quickly.
Maria has to baby-sit. That’s______ she can't come with us.
--- I rang you at about ten, but there was no reply.--- Oh, that was probably ____ I was seeing the doctor.
15. _______ all the inventions have in common is _____they have succeeded.A. What; what B. That; that C. What; that D That; what