---- ______ you ever ______ aboard ?--- Yes, but only once.
| A．Do ,travel | B．Have traveled |
| C．Did travel | D． Were traveling |
JD.com is one of ________ shopping websites in China.
A. large B. larger C. largest D. the largest
When the father heard from his son from abroad, he became ________.
| A．exciting | B．happily | C．happiness | D．excited |
We were all ________ favor of this plan after we discussed for about two hours.
| A．at | B．in | C．to | D．on |
Frank looks very worried today. There must be ________ wrong with him.
| A．anything | B．nothing | C．something | D．everything |
As students, we should work hard and do ________ best to realize our dreams.
| A．us | B．our | C．ours | D．ourselves |