The World Wide Webis sometimes jokingly called the World Wide Wait because it _______ be veryslow

One advantage of eating a balanced breakfast is ______ it can keep you energetic throughout the day[ ]

She often helps her mother with some ______ at home.

As we know it’s difficult to live in a foreign country．—________if you can’t understand the language there．

The reason _____he explained to the teacher was _____he had forgotten to memorize the new words.[ ]