______ we have enough evidence, we can’t win the case.
| A．Once | B．As long as | C．Unless | D．Since |
Only when I made it to the train station _______ that I had left my ticket at home.
| A．have I realized | B．did I realize | C．had I realized | D．would I realize |
Jane is not good at sports，but when itto cooking，she’s excellent．
| A．happens | B．comes | C．does | D．occurs |
He finds it hard to keep _____ with the change of society if he stops learning．
| A．company | B．time | C．faith | D．pace |
A warm welcome _______to the Russian guests at the airport tomorrow morning.
| A．is given | B．has been given | C．is going to give | D．will be given |
Please tell me the way you thought of _______ the garden.
| A．take care of | B．to take care of |
| C．taking care of | D．to take care |