-- Such beautiful flowers! I can't decide _______ for my mum.
-- For Mother's Day, it can't be better to take some carnations (康乃馨).
A:to choose which
B:how to choose
C:which to choose
D:when to choose
阅读理解
Yesterday Peter felt very sorry because he forgot (忘记) to say “Happy Birthday” to his uncle . So he wrote a letter to his uncle : “My dear uncle, I'm very sorry because I forgot your birthday. But to teach me a lesson, you'd better (最好) forget my birthday on Tuesday, tomorrow.”