PRESENT PERFECT

Active — user can report

คำแนะนำของผู้เขียน

WRITE SENTENCES IN PRESENT PERFECT

สำรวจแผ่นงาน

Writing an email

Writing - ESL

Writing an email to a friend

UASA: Part 7 practice

Writing - ESL

Email writing

Writing tip 1: it - it is

Writing - ESL

Tips to prevent common mistakes in writing.
Mobile format

INVENTIONS THAT CHANGED THE WORLD

Writing - ESL

Instructions: Complete the text with the words from the box. Use each word only once. Pay attention to the context and verb tenses.

WORD BANK

breakthrough · effect · experiment · hypothesis · impact · research · scientific · scientist · theory · vaccine