With the development of high technology, more and more new things ________ to the field of IT.
We grow all our own fruit and vegetables, ____ saves money, of course. A as B. which C. that D. what
If you have some difficulties ____ your grammar, you had better ask your teacher ____.
--- How are you getting along with your studies? --- Not very well, ____.
______ more attention, the tree could have grown better.
She pretended ______ me when I passed by.