But for his help, we wouldn’t have succeeded. So we ______ his timely aid.
| A．distributed | B．contributed | C．acknowledged | D．admitted |
David couldn't tell __________ from far away whether the green traffic light meant going straight or turning left.
| A．on purpose |
| B．at random |
| C．in short |
| D．for sure |
-Are you a volunteer now?
-No, but I __________. I worked for the City Sports Meeting last year.
| A．used to |
| B．used to be |
| C．used to do |
| D．was used to |
He used to __________cards, but now he is used to __________ a walk after supper.
| A．play; taking |
| B．playing; take |
| C．play; take |
| D．playing; taking |
Whenever my parents talk with me, they always __________ great importance to how important and necessary it is for us young people __________ ourselves both in work and in life.
| A．put; to depend on |
| B．attach; to rely on |
| C．lay; depending |
| D．attach; relying on |
I wondered what difficulty he had __________ the plan?
| A．to carry out |
| B．carrying out |
| C．carried out |
| D．with carrying out |