Ⅰ.单句语法填空
1.After a quick glance ________ his watch, he went out to pick up his good friend at the airport.
2.He expressed his ________ (approve) of the suggestion that the school be established immediately.
3.Through tests time and time again, this kind of rope ________ (prove) strong.
4.I missed the concert. If only you ________ (drive) your car to pick me up.
5.We've corresponded ________ each other for years but I've never actually met him. How I wish I could see him during my stay in Beijing.