Your ______ as a student will be excellent if you develop a habit of reflecting on how you learn.
After the new technique was introduced, the factory produced _________ bikes in 2010 as the year before.
Instead of ___________the dictionary, I always try to guess the meanings of those new words in the passage.
Most of the evidence was destroyed in the fire.__________, it would be almost impossible to prove Jim guilty.
My father read through my composition and _________quite a few spelling mistakes in it.
It was about 600 years ago _______the first clock with a face and an hour hand was made.