13. --- How long has he been in the army?
--- Oh, he joined the army as far ____ as 1997.
| A．ago | B．away | C．from | D．Back |
If you ______ an hour earlier, you wouldn’t have been caught in the rain．
| A．has returned | B．returned |
| C．had returned | D．will return |
I’d like to recommend some new computer programs _______ for home buildings．
| A．designing | B．designed |
| C．to design | D．design |
We haven’t discussed yet ______ we are going to place our new piano．
| A．where | B．which | C．what | D．that |
She has owned the painting since 1950, when it ______ to her as a wedding present．
| A．has given | B．gave |
| C．was given | D．has been given |
You can get to your destination earlier ______ you don’t mind taking the night train．
| A．when | B．if | C．though | D．until |