Only when he returned home ______ what had happened.
| A．did he realize |
| B．he realized |
| C．he did realize |
| D．has he realized |
. I was _____lost in the English Evening last night. There was nothing like it.
| A．thoroughly | B．partly | C．apparently | D．constantly |
. The English spoken in England is only slightly different from_____ spoken in Canada.
| A．which | B．what | C．that | D．the one |
Once a decision has been made, all of us should ____it.
| A．direct to | B．lead to | C．stick to | D．refer to |
Only then, _____we ____that the trapped miners were in danger when the flood water dripped into the tunnels.
| A．have; realized | B．did; realize |
| C．do; realize | D．had ; realized |
–We spent all our money because we stayed at ____most expensive hotel in town.
-- Why didn’t you stay at ____cheaper one ?
| A．the ; the | B．the ; a | C．a ; a | D．a ; the |