So absorbed _____ in the experiment that he didn’t even notice it was already over 12 o’clock.
A．did he B．he did C．was he D．he was
Tell your doctor with a detailed medical history ______ he can give you the accurate treatment.
A．even if B．so that C．in case D．as though
— Nowadays people seem to be becoming more and more selfish.
— How much better life would be if we ______ to the values of the past!
A．would return B．had returned C．return D．were to return
— Who _____ be phoning us at this time of night?
— It might be your sister.
A．might B．can C．dare D．must
— You have helped me a lot. I can’t thank you enough.
—______.
A．Be my guest. B．That’s right. C．I don’t think so. D．Think nothing of it.
I didn't realize my mother loves me so such until I received her gift for my 18th birthday, a diary______ the process of my growth．
A．recorded B．to record C．recording D．having recorded
