问题
______have you been learning to swim —-Half a year.
A: Howlong
B: How often
C:How far
D: When
B: How often
C:How far
D: When
正确答案是：
同类题型
__________ do you go to school every day—I go to school at half past seven.
His strength had almost _____ when they found him in the desert.
Who can I ask ________ help if I don’t know ________to deal with the problem– Your parents， I think.
Can you find anyone to help you_________ your homework—– Yes,Jack is ___________ to help .