The dish smells .It must be very delicious.
–Whose is this purple scarf?–It _______ be Mary’s. She always wears a purple scarf like this.
Please _______ spend too much time playing computer games. It wastes a lot of time.
–Victor, could you please speak more _______ so that everyone can understand you?–OK.
It’s not easy to learn a foreign language, but I will never _______.
My classmates and I are working much _______ than before, because we’ll take an important exam soon.