The birds could not fly in the sky .改同义句 The birds ? ? ? fly

The birds could not fly in the sky .改同义句 The birds ? ? ? fly The birds couidn't fly in the sky.（改为同义句）The birds---fly in Birds fly in the sky的意思 __ birds can fly in the sky. The birds couldn't fly in the shy.同义句 I like to watch the birds fly in the sky I like to watch the birds fly in the sky. look,the birds can -----(fly)in the sky.动词形式 The birds couldn't fly in the sky. Birds can fly in the sky _____(自由地) The birds can ( )(fly). 时态,The birds (fly) in the sky are moving towards the South f