A:
B:
C:
D:
选词填空,每词限用一次。
brother grow grapes brown umbrella
从方框中选择恰当的词或短语并用其正确的形式填空(每个词或短语只能用一次)。
busy; difficult; dream of; be covered live ; arrive in; be away;
row a boat; in one's fifties; out of control ; have a chat with
化学方程式:4Al+3O22Al2O3可读作____ .
— By making telephone calls.