My sister is only two years old, and I have to _____ her on Sunday.A. look for B. look after C. look like D look at
Our English teacher often asks us_________ English _____in class.
I’m sorry I’m late again________ the heavy rain.
If it_________ tomorrow, I’ll go birdwatching with my father.-----That’s a good idea.
Not everyone knows_____they want to be.
Science is _____ difficult for some students ____ learn, so many of them don’t like it.