Dear friends， do you still remember ____ three years ago？
To realize our dream!（ ）
| A． |
why you came here |
| B． |
why did you come here |
| C． |
how you came here |
| D． |
how did you came here |
﹣I wonder ____ the students have a physical examination．
﹣Once a year．（ ）
A．how farB．how soonC．how longD．how often
The designer has tried every possible way to make the robot light， so you _____ worry about its weight．（ ）
A．mustB．mayC．can'tD．needn't
On sunny days， my grandma often reads a novel ____ the window．（ ）
A．byB．forC．withD．from
﹣Hello， Beijing Hotel． Can I help you？
﹣Yes， I'd like to _____ a single room for two nights．（ ）
A．enterB．moveC．bookD．provide
A better future is the goal of the Chinese people， _____ it's also the common interest of the world．（ ）
A．soB．andC．orD．but