I ______ fifty pages, but I have to read fifty more.
if I had known that she was there, I ______ hello.
You were driving too fast_______you?', said the policeman.
……… is rooted in experiments in iron and steel conducted in the nineteenth century.
Mars, the fourth planet from the Sun, ...... of sky gazers.
His eyes were ...... bad that he couldn't read the number plate of the car in front.
The more advanced the specialization in production and the more complex the economy, ……… to make any given good reach its ultimate user by using barter.
The teacher became upset when Frank started talking about a subject that was not ……… to the lecture.
..... tired Melissa is when she gets home from work, she always makes time to say goodnight to the children.
........ to move from a project manager position to a senior project manager, it may be necessary for them to complete some form of project management certification.