Some students have trouble _____grammar while others have difficulty______ new words.
----- Would you mind helping me with my suitcase? I really can’t manage it by myself.----- ________.
______ after a long walk, Henry called and said he couldn’t come.
At the age of six, my son _____ ask me a lot of strange questions, and some of them were too hard to answer.
When you rewrite the paragraph, I advise you to _____ the last sentence as it is rather misleading.
Oh, what a pity! It ____ so easy for me to bring those photographs I wanted to show you, but I ____ them at home.