Many scientists say that it’s important for us to have ______ food in our diet.

He _______ you an e-mail as soon as he ________ a plan.

There _____ still some milk in the fridge. It’s not necessary to go to the store today.

There aren’t many people in the village since ______ of them ______ moved to the town nearby.

.在字母表中,______和______ 两个字母可以单独成词。