______ their service, the workers of the hotel are active in learning English.
A．Improving B．To improve C．Improve D．Having improved
Is this the museum _____ you visited the other day?
A．that B．where C．in which D．the one
To qualify yourself for this kind of new job, I recommend that you ________ some online courses.
A．to take B．taking C．take D．would take
It was the first time I _______ there and I was impressed by the friendly people very much.
A．go B．was going C．had gone D．have gone
After three years’ study, Jane got a ________ for teaching English.
A．qualification B．composition C．collection D．satisfaction
I was given three books on sewing, the first ______ I really enjoyed.
A．that B．which C．of which D．of that
