s required so much of me, so I believed that he was _____ being satisfied with my job though I had tried my best.

Mark has _____ good command of English. Therefore, he plays _____very important part in our team.

Before driving into the city, you are required to get your car_______.

Loulan City is not at all ________ a traveler who has never seen the desert before can expect

keep on, you’ll succeed _____. Wish you success in the examinations.