The kids may not go to school in the future.They____at home on computers.
A:have studied
B:will study
C:studied
已知函数f(x)=sinx2cosx2,则下列等式对x∈R恒成立的是( )
— Let's go to Huangyao Old Town next weekend, shall we?—Sorry. I ____there many times. I don't want to go again.