Students and ___ have been working hard填staff 还是staffs
___ they have been working hard to find?Ais that what Bis th
you d____ this reward as you have been working hard填什么?
Look!How ___(hard) the students are working!
must have working hard与must have been working hard的区别
You d____ this reward as you have been working hard.
9.We have been talking about the school and the students ___
Difference between "have worked" and "have been working "
I have been working hard all morning 为什么要使用后置定语hard修饰动名词work
have you been working hard与did you work hard区别
— Each of the students,working hard at their lessons,___ the
完成时的时态小问题Have you been working too hard?这句是完成时吗 还是完成进行时?怎么区别
hard working还是working hard,hard work呢