问题

Rick ______ a lot about Chinese culture since he came to China.
A:has learned
B:will learn
C:learns
D:learned;
B:will learn
C:learns
D:learned;
正确答案是:
同类题型
__________ the program , they have to stay there for another two weeks.
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Things made by hand are usually more expensive than _ produced in factories.
,why are you so upset—-I _________ my cellphone all morning but it isnowhere to be found