—This physics problem is too difficult. Can you show me _____, Wang Li? —Sure. A. what to work it out B. what to work out it C. how to work it out
Tom is good ______math and he is also good ______his classmates.
I usually go to school ________.
-----What time do you usually go to bed? ----- At half _______nine.
Can you help me ________my English?
It takes _____one hour _____my homework every day.