单项选择题This week, the weather ______ to change every day: One day is hot, the next is cold.
单项选择题Keep practicing and you ______ your English.
单项选择题The new-designed car is on show now. I wonder ______.
单项选择题Raymond and Howell proposed job cuts following a two-year decline in sales ______.
单项选择题______ Are Jim and Bob playing outside — ______ They are doing their homework in the study.