【单选题】Do you know _____ this time yesterday? [ ]
B.
who they are waiting for
D.
who they were waiting for
【单选题】Il a réussi à la force du poignet .
【单选题】—Who are they? — ______ . [ ]
【单选题】Who are they ?
B.
They are in front of the door .
C.
They are my grandfather and grandmother .
【单选题】________ paresseux qu'il ait été, il a réussi à l'examen final