My mind wasn't on what he was saying so I'm afraid I _____half of it．（ ）
A．missedB．was missing
C．will missD．would miss
一 I can't get on well with my family.
一 Why not talk with them？You should communicate ________ things become worse.
A．untilB．unlessC．afterD．before
一 I wonder if this glass is Tom's.
一 It ________ be his.His was broken just now.
A．mustn'tB．may notC．can'tD．shouldn't
Over the past few months，Chinese COVID vaccines （疫苗） ________ in many other countries.
A．have arrivedB．arrived
C．will arriveD．had arrived
一 Which dress do you prefer，the red one or the green one？
一 ________ .I like blue.
A．AnyB．EitherC．NeitherD．Both
France is ________ European country，and I visited ________ country three years ago.
A．an；theB．a；theC．an；aD．the；the