It is difficult to between Mary and her younger sister
| A．decide | B．distinguish | C．explore | D．express |
There is little doubt in your mind that he is innocent, ________？
| A．is there | B．isn' t there | C．is he | D．isn' t he |
Although the Eiffel Tower ________ to last for 20 years, it is still standing today.
| A．has designed | B．had designed | C．is designed | D．was designed |
He didn't put the things________they belonged，for________he got his punishment.
| A．which；that | B．what；this | C．that；whose | D．where；which |
When he was there, he ________ go to that coffee shop at the corner after work every day.
| A．would | B．should | C．had better | D．might |
With the college entrance examination approaching，students should________to stay energetic.
| A．work out | B．pull out | C．give out | D．figure out |