任务 1 / 10
PRESENT PERFECT – 未完成时
我们用它来表示尚未结束的时间（today, this week, this year）。
I (drink) three cups of coffee today. 我们用它来表示尚未结束的时间（today, this week, this year）。
任务 2 / 10
She (call) me twice this week.
任务 3 / 10
We (spend) a lot of money this month.
任务 4 / 10
He (write) three essays this semester.
任务 5 / 10
They (buy) two new cars this year!
任务 6 / 10
I (see) John this morning. (It is still morning now).
任务 7 / 10
You (make) excellent progress this term.
任务 8 / 10
The company (open) three new stores this year.
任务 9 / 10
I (have) four meetings today.
任务 10 / 10
She (read) two 书 this week.